What Does “Battery 1 Not Present” Mean?

The Surface Book has a unique two-battery design:

• Battery 1 — located inside the Clipboard/display portion
• Battery 2 — located inside the keyboard base

When Battery 1 is not detected, Windows may show only the base battery. The Surface can still operate, but battery capacity and normal charging behavior may be affected.

Why Can This Happen After a Battery Replacement?

If Battery 1 was replaced and is still not recognized, several possibilities should be considered.

1. The Replacement Battery Is Defective

A replacement battery can physically fit the Surface Book but still have a problem with its internal battery-management circuitry. The battery may therefore fail to communicate correctly with the Surface.

2. The Battery Connector Is Not Properly Seated

During battery replacement, the connector or cable must be correctly positioned. Even a slightly loose or damaged connection can prevent the Surface from detecting the battery.

3. The Replacement Battery Is Incompatible

Not every replacement battery sold for the Surface Book is necessarily equivalent to the original. Differences in the battery-management electronics or firmware can cause detection problems.

4. Battery or Charging Circuitry May Be Damaged

If the replacement process involved damage to a connector, cable, or motherboard component, Windows may not be able to communicate with Battery 1 at all.

An Important Issue: Battery Authentication and Revision Compatibility

There is another possibility that is particularly relevant when a non-OEM replacement battery has been installed.

Surface Book batteries contain battery-management electronics, including a fuel-gauge/authentication component that communicates with the device’s embedded controller (EC). The battery is therefore more than simply a pack of cells.

A replacement battery may be physically the correct size and connector type but still fail to communicate properly with the Surface.

A non-OEM battery, incorrect battery revision, or mismatched part number may potentially be rejected or fail identification by the EC firmware. In that situation, the battery can be physically installed correctly while Windows continues to report Battery 1 as not recognized or not present.

Therefore, if the normal troubleshooting steps do not restore Battery 1, it is worth checking the exact battery part number and revision against the specific Surface Book model and generation.

This is especially important when purchasing replacement batteries online, because batteries advertised as simply “Surface Book compatible” may not necessarily be the correct revision for every Surface Book configuration.

Troubleshooting Steps

Step 1: Check Device Manager

Open:

Device Manager → Batteries

Look for:

Microsoft Surface ACPI-Compliant Control Method Battery

If the battery entry is present but behaving incorrectly, you can try uninstalling the battery device and restarting the Surface. Windows should reinstall the appropriate driver automatically.

Step 2: Perform a Complete Shutdown

It is also worth performing a full shutdown rather than simply restarting Windows.

1. Shut down the Surface completely.
2. Disconnect the charger.
3. Detach the Clipboard from the Base.
4. Reattach the Clipboard securely.
5. Connect the charger.
6. Start the Surface again.
7. Check the battery information in Windows.

Because the Surface Book has two separate battery systems, reconnecting the Clipboard and Base can sometimes help resolve detection problems.

Step 3: Check Windows Battery Information

Go to:

Settings → System → Power & battery

Check whether Windows reports Battery 1, Battery 2, or only the base battery.

If Battery 2 is visible but Battery 1 is completely absent, this provides an important diagnostic clue.

Step 4: Check the Battery Driver

In Device Manager → Batteries, check whether the Surface battery device is present.

If appropriate, uninstall the battery device and restart the Surface. Windows should detect the hardware again and reinstall the driver.

Step 5: Check the Replacement Battery

If Battery 1 remains missing, verify:

• The exact battery part number
• Battery revision
• Compatibility with the specific Surface Book generation
• Whether the battery is OEM or aftermarket
• Whether the replacement battery was advertised specifically for the correct model

Do not rely solely on the physical connector or the seller’s statement that the battery is “compatible.”

Step 6: Recheck the Physical Installation

If the battery is the correct part, the connector and internal connection should be inspected by a qualified technician.

A loose connector, damaged cable, or damaged connector on the device can prevent the battery-management electronics from communicating with the Surface.

What If Battery 2 Works but Battery 1 Is Missing?

This is an important clue.

If Battery 2 is detected and working normally, but Battery 1 is completely absent, the problem is less likely to be a general Windows battery-driver problem.

Instead, attention should be focused on:

• The replacement Battery 1
• Battery compatibility and revision
• The battery’s authentication/fuel-gauge circuitry
• Its connector
• The battery cable
• The Clipboard’s charging circuitry
• Communication with the embedded controller

In other words, if Windows cannot see Battery 1 at all, repeatedly reinstalling Windows or replacing unrelated drivers is unlikely to fix the underlying problem.

Could the New Battery Be the Problem?

Yes.

If Battery 1 was working before the replacement and disappeared immediately after the replacement, the replacement battery or its installation should be investigated first.

A useful diagnostic approach is to compare the behavior before and after the repair:

Final Thoughts

The Surface Book 1 is different from conventional laptops because it contains two separate batteries. A Battery 1 detection problem after replacement therefore needs to be approached differently from a normal Windows battery-driver problem.

If Battery 2 continues to work normally while Battery 1 remains completely undetected after a battery replacement, the most important things to check are the replacement battery’s compatibility, revision and battery-management electronics, followed by the physical installation and Clipboard circuitry.

A battery can fit perfectly and still not be accepted or correctly identified by the Surface.

If Steps 1–6 do not resolve the problem, checking the exact battery part number and revision against the specific Surface Book model/generation is one of the most worthwhile next steps.

The key question is: Did Battery 1 disappear only after the replacement?

If yes, investigate the replacement battery and its compatibility before assuming that Windows itself is responsible.

The Main Fix: Microsoft Mouse and Keyboard Center

The Microsoft Mouse and Keyboard Center is the first thing to try.

Step 1 — Install Microsoft Mouse and Keyboard Center

Install Microsoft Mouse and Keyboard Center from the Microsoft Store.

Step 2 — Adjust the Arc Mouse Settings

Once installed, open the application and select your Arc Mouse.

The software can provide additional controls for the Arc Mouse’s touch-scrolling behavior that aren’t available in the normal Windows mouse settings.

This is important because the Arc Mouse uses a touch-sensitive scrolling surface rather than a traditional physical scroll wheel.

Step 3 — Don’t Rely Only on Windows’ “1 Line” Setting

You may already have:

Settings → Bluetooth & devices → Mouse → Lines to scroll at a time → 1

but the Arc Mouse can still feel excessively fast.

That’s because the standard Windows setting does not necessarily control every aspect of the Arc Mouse’s touch-scroll behavior.

Why This Works

The Arc Mouse’s scrolling mechanism is different from a conventional mouse wheel.

Normal mouse:

Scroll wheel → Windows scroll setting → Page movement

Arc Mouse:

Touch scrolling → Arc Mouse behavior → Windows

Therefore, changing Windows’ scroll-line setting alone may not solve excessive scrolling.

Bottom Line

If your Arc Mouse is scrolling too fast even at 1 line, the first solution to try is:

Install Microsoft Mouse and Keyboard Center → select Arc Mouse → adjust the available scrolling/touch settings.

This is a better first step than repeatedly changing the standard Windows mouse-scroll setting.

If your Microsoft Surface Pro 4 (12.3″) suddenly refuses to boot and displays only the SURFACE logo with a red rectangle containing an open padlock icon at the top of the screen, don’t panic.

At first glance, it looks like a serious hardware problem or a failed Windows update. Fortunately, in most cases, it isn’t.

This guide explains what the red padlock means and shows you how to restore your Surface in just a few minutes.

What Does the Red Padlock Mean?

The red bar with an open padlock icon indicates that Secure Boot has been disabled in your Surface’s UEFI (firmware) settings.

Secure Boot is a security feature built into modern computers that helps prevent unauthorized operating systems, bootloaders, or malware from loading during startup.

When Secure Boot is turned off, Surface displays this warning during boot to alert you that the device is no longer using Microsoft’s recommended security configuration.

Good news: This is not a hardware failure.

Why Did This Happen?

Secure Boot may have been disabled because of:

• Changes made in the UEFI firmware settings
• Installing another operating system
• Firmware configuration changes
• Accidental modification of Secure Boot settings
• Certain repair or troubleshooting procedures

In most situations, Windows itself is still intact.

How to Fix the Red Padlock Screen

Follow these steps carefully.

Step 1: Shut Down the Surface

Press and hold the Power button until the Surface turns completely off.

Wait approximately 10 seconds before continuing.

Step 2: Enter UEFI Settings

1. Press and hold the Volume Up button.
2. While holding Volume Up, press and release the Power button.
3. Continue holding Volume Up after the Surface logo appears.
4. Release the button only when the blue UEFI Settings screen appears.

Step 3: Open the Security Menu

Inside the UEFI screen:

• Select Security

Step 4: Enable Secure Boot

Locate:

Secure Boot

Select:

Change Configuration

Choose:

Microsoft Only

This is the default and recommended certificate configuration for nearly all Surface users.

Step 5: Save and Restart

Choose:

Exit

Then select:

Restart Now

Your Surface should now boot normally without showing the red padlock.

Why “Microsoft Only” Is Recommended

Microsoft Only allows Windows to verify trusted boot components while maintaining maximum compatibility with Surface firmware.

Unless you’re intentionally running Linux or another operating system, this is the safest and recommended option.

If the Surface Still Won’t Boot

If the problem continues after enabling Secure Boot:

• Verify that Secure Boot is actually enabled.
• Perform a two-button shutdown (if supported by your Surface model).
• Try booting from a Surface Recovery USB.
• Run Surface Diagnostics after Windows starts.
• Install the latest firmware updates.
• Reset Windows while keeping your files if necessary.

Frequently Asked Questions

Is my Surface damaged?

No.

The red padlock does not indicate a hardware failure. It simply means Secure Boot has been disabled.

Will I lose my files?

No.

Re-enabling Secure Boot does not delete data.

Can I leave Secure Boot disabled?

Yes, but it is not recommended unless you intentionally need it disabled for another operating system or advanced development purposes.

Does this issue affect only Surface Pro 4?

No.

The same behavior can occur on several Surface models, including:

• Surface Pro 3
• Surface Pro 4
• Surface Pro (2017)
• Surface Pro 5
• Surface Pro 6
• Surface Pro 7
• Surface Laptop
• Surface Book
• Other Surface devices with UEFI Secure Boot

Conclusion

Seeing the SURFACE logo with a red open padlock can be alarming, but in most cases the fix is simple.

The warning indicates that Secure Boot has been disabled, not that your Surface has failed.

By entering the UEFI settings and restoring Secure Boot to the Microsoft Only configuration, your device should return to normal operation within minutes.

After installing the June 2026 firmware update, some Surface Laptop 7 users powered by the Qualcomm Snapdragon X Plus processor began noticing abnormal battery drain during Modern Standby (S0). Instead of entering the Deepest Runtime Idle Platform State (DRIPS), the laptop remained active while sleeping, eventually hibernating after approximately 5% battery loss. Wake times also became noticeably slower.

In this article, we’ll walk through the complete troubleshooting process—from identifying the problem using Sleep Study, investigating the mysterious _SB.UR15 device, testing different workarounds, and finally discovering a fix that restored DRIPS without disabling Bluetooth.

System Configuration

• Device: Surface Laptop 7
• Processor: Qualcomm Snapdragon X Plus
• Operating System: Windows 11 Pro 25H2 (Build 26200.8655)
• Sleep Mode: Modern Standby (S0)

Symptoms

The laptop exhibited several unusual behaviors:

• Battery drained quickly while the lid was closed.
• The system eventually hibernated after approximately 5% battery loss.
• Wake-up times became noticeably slower.
• Running powercfg /sleepstudy showed no DRIPS activity.

The initial Sleep Study report immediately highlighted an abnormality. The DRIPS histogram was completely empty, and the Qualcomm Bus Device (_SB.UR15) accounted for 99% of the active time during Modern Standby.

Figure 1. Initial Sleep Study showing an empty DRIPS histogram. Qualcomm Bus Device (_SB.UR15) remains active for 99% of the standby session, preventing the system from entering DRIPS.

Initial Troubleshooting Attempts

Before digging deeper, several common troubleshooting steps were tried:

• Enabled Airplane Mode
• Switched to Disconnected Standby
• Allowed the laptop to sleep overnight

Unfortunately, neither of these changes reduced standby battery drain, suggesting the issue was unrelated to Wi-Fi or network connectivity. At this point, the Sleep Study report became the primary diagnostic tool.

Sleep Study Identifies the Problem Device

Expanding the FX Devices section of the Sleep Study report revealed another important clue.

Windows explicitly identified the Qualcomm Bus Device (_SB.UR15) as the Problem Device.

Figure 2. Sleep Study marks Qualcomm Bus Device (_SB.UR15) as the Problem Device responsible for blocking DRIPS.

This confirmed that Windows itself had identified the component preventing the Snapdragon platform from entering its deepest idle state.

What Is _SB.UR15?

At first glance, _SB.UR15 looks like the name of a hardware device, but it isn’t.

Instead, it is an ACPI UART (Universal Asynchronous Receiver-Transmitter) bus exposed by the Qualcomm platform. Components such as the Bluetooth transport layer communicate through this UART interface.

If software keeps this UART bus active, the Snapdragon SoC cannot transition into DRIPS, even though the laptop appears to be sleeping.

Matching _SB.UR15 in Device Manager

To determine which Device Manager entry corresponded to the Sleep Study report, the Qualcomm Bus Device properties were opened.

Under Details → BIOS Device Name, the value matched exactly:

_SB.UR15

Figure 3. The Qualcomm Bus Device in Device Manager corresponds directly to the ACPI identifier (_SB.UR15) shown in Sleep Study.

This confirmed that both Sleep Study and Device Manager were referring to the same underlying hardware interface.

Investigating the Driver

The next step was switching Device Manager to View → Devices by Connection.

Surprisingly, nothing appeared underneath _SB.UR15, making it difficult to determine what hardware was actually using the UART bus.

Switching to Drivers by Device revealed another useful clue.

The Qualcomm Bus Device was using:

qcuart8380.inf

Figure 4. Driver inspection reveals that the Qualcomm Bus Device uses qcuart8380.inf, pointing the investigation toward the UART transport layer.

This suggested that the issue was likely related to Qualcomm’s UART transport rather than the bus device itself.

Testing the Theory

To verify the hypothesis, the Qualcomm Bluetooth UART Transport Driver was temporarily disabled.

After rebooting the system and allowing it to sleep again, the results were immediate.

The Sleep Study report now showed:

• DRIPS histogram returned
• 98% Low Power State Time
• Normal standby behavior

Figure 5. Disabling the Qualcomm Bluetooth UART Transport Driver immediately restores DRIPS, confirming that the UART transport layer was preventing deep idle.

Although this confirmed the root cause, disabling Bluetooth completely was not a practical long-term solution.

The Permanent Fix

A better solution was eventually discovered.

Navigate to:

Device Manager → Bluetooth → Qualcomm FastConnect 7800 Dual Bluetooth Adapter → Properties → Power Management

Then enable:

Allow the computer to turn off this device to save power

After rebooting, Bluetooth continued functioning normally while the laptop successfully entered DRIPS.

An overnight Sleep Study lasting 8.5 hours showed only about 3% battery loss, with the DRIPS histogram fully populated.

Figure 6. Final Sleep Study after enabling Bluetooth power management. DRIPS is restored while Bluetooth remains enabled.

Why Is NoHwDrips.SOC Still Red?

Even after the issue was resolved, Sleep Study still displayed:

NoHwDrips.SOC in red.

Figure 7. NoHwDrips.SOC remains highlighted despite DRIPS functioning correctly.

At first glance, the red NoHwDrips.SOC entry may seem concerning. However, after the Bluetooth power management change, the Surface Laptop 7 consistently entered DRIPS, the standby battery drain dropped significantly, and wake behavior returned to normal. This indicates that, in this scenario, the remaining NoHwDrips.SOC entry did not prevent the system from achieving proper Modern Standby performance.

Final Result:

Before vs After

Final Thoughts

This troubleshooting journey demonstrates how Windows Sleep Study can uncover Modern Standby issues that are otherwise difficult to diagnose.

Rather than being caused by Wi-Fi or Modern Standby itself, the issue was traced to the Qualcomm Bluetooth UART transport and its power management behavior. Enabling “Allow the computer to turn off this device to save power” for the Qualcomm FastConnect 7800 Dual Bluetooth Adapter restored proper DRIPS behavior while preserving full Bluetooth functionality.

If you’re trying to purchase a refurbished Surface Pro 12-inch and a Surface Pro Keyboard from the Microsoft Store but keep seeing a “Try that again. Something happened on our end” error, you’re not alone.

Many users have reported that they cannot remove old items from their Microsoft Store cart, even after trying different browsers, devices, and troubleshooting steps.

Here’s what causes the problem and how you can work around it.

You may see an error similar to this:

Try that again

Something happened on our end. Waiting a bit might help.

CASMicrosoftCVf77403bb.0.7

or

CASMicrosoftCV125fd86f0.3

The Error Message:

The CASMicrosoftCV… code is not the actual problem. It’s simply a correlation ID Microsoft uses to trace errors in its backend systems.

The screenshots below show the typical error users encounter:

Why Does This Error Happen?

This is not caused by:

• Your browser
• Your PC
• Your internet connection
• Cookies or cache
• Your Microsoft account password

Instead, it’s generally a Microsoft Store Commerce backend issue where the shopping cart service becomes stuck or temporarily fails.

That explains why the error continues even after:

• Logging out and back in
• Clearing browser cache
• Using Chrome, Edge, Firefox, or Safari
• Trying another computer
• Refreshing the page
• Contacting Microsoft Support

Don’t Waste Time Trying to Delete the Old Cart Items

One of the biggest mistakes is repeatedly trying to remove the existing items from the cart.

If Microsoft’s cart service is experiencing a backend issue, deleting items usually won’t succeed until Microsoft fixes the problem.

Instead, use a different approach.

Workaround That Often Works

Follow these steps instead of opening your existing shopping cart.

Step 1: Open an InPrivate/Incognito Window

Use:

• Microsoft Edge InPrivate
• Chrome Incognito
• Firefox Private Window

This starts a fresh browsing session.

Step 2: Sign In

Log into your Microsoft account.

Step 3: Skip the Shopping Cart

Do not open the existing cart.

Instead, navigate directly to the product page for the refurbished Surface Pro 12-inch.

Step 4: Use “Buy Now” or Add the Product Directly

Rather than editing the old cart:

• Click Buy Now, if available.
• Or add the Surface directly from its product page.

Step 5: Add the Surface Pro Keyboard

Once the Surface has been added successfully, visit the keyboard product page and add it separately.

Still Not Working?

If the issue continues, try signing in with another Microsoft account.

Sometimes the problem is tied to a specific cart associated with one account rather than Microsoft’s entire storefront.

What NOT to Do

Avoid spending hours repeating these steps:

• Refreshing the page repeatedly
• Clearing browser cache over and over
• Switching browsers repeatedly
• Restarting your PC
• Removing cookies multiple times
• Constantly attempting to delete cart items

These usually won’t resolve a Microsoft commerce backend failure.

Is This a Microsoft Server Issue?

In many cases, yes.

The message:

“Something happened on our end.”

is Microsoft’s way of indicating that the problem is occurring on their servers rather than on your device.

The CASMicrosoftCV identifier is mainly intended for Microsoft’s engineers to trace the request in their backend logs.

Final Thoughts

If you’re seeing the Microsoft Store “Try That Again” error while trying to remove items from your cart, the issue is most likely with Microsoft’s commerce backend—not your computer or browser.

The quickest workaround is to:

• Open an InPrivate/Incognito browser window.
• Sign in to your Microsoft account.
• Go directly to the Surface Pro 12-inch refurbished product page.
• Add the Surface from the product page instead of the cart.
• Then add the Surface Pro Keyboard.
• If necessary, try purchasing with a different Microsoft account.

Until Microsoft resolves the backend issue, avoiding the existing cart is often the most effective way to complete your purchase.

You don’t need a secret phone number or a special keyboard shortcut. The key is knowing what to type on Microsoft’s official support page.

How to Contact a Live Microsoft Support Agent

Follow these steps to try to reach a real Microsoft support representative.

1. Go to Microsoft Support

Open Microsoft’s official Contact Us page:

Make sure you are using the official Microsoft website before entering any account information.

2. Sign In to Your Microsoft Account

Sign in with the Microsoft account associated with your Surface device.

Signing in can help Microsoft identify your account and provide support options relevant to your products and services.

3. Type “Chat with an agent”

This is the important step.

In the support search or assistance box, type:

Chat with an agent

The support system should then display options for contacting Microsoft Support.

4. Click “Contact Support”

Look for the Contact Support option, usually displayed toward the bottom of the support experience.

Click it to continue.

5. Select Your Surface Product

Choose the product you need help with, such as:

• Surface Laptop
• Surface Pro
• Surface Go
• Surface Studio
• Surface accessories

Follow the questions and prompts provided by Microsoft.

6. Start the Live Chat

Depending on your location, product, account, and Microsoft’s currently available support channels, you may be offered the option to chat with a support agent.

This allows you to explain your Surface problem directly to a person instead of relying entirely on automated troubleshooting.

Why You Might Want to Contact a Live Agent

A live support representative can be especially useful when the standard troubleshooting steps haven’t solved the problem.

For example, you may need assistance with:

Surface Laptop won’t turn on
Power, charging, battery, or startup problems.

Windows login problems
PIN, password, Windows Hello, or facial recognition issues.

Surface keyboard or touchscreen problems
Hardware or accessory-related issues.

Surface Pen problems
Charging, pairing, or pen-recognition issues.

BitLocker recovery
Problems accessing your BitLocker recovery information or recovering access to your device.

Warranty and repair questions
Questions about repair options, service, warranty coverage, or replacement.

Is There a Secret Keyboard Shortcut to Reach Microsoft Support?

Not really.

There is no universal magic key combination that immediately connects your Surface to a Microsoft support agent.

Instead, the useful trick is to visit the official Microsoft support page and enter:

“Chat with an agent”

Then select Contact Support and continue through the Surface product and issue-selection process.

What Information Should You Have Ready?

Before starting a support chat, it helps to have your:

• Surface model
• Device serial number
• Microsoft account information
• Error messages or screenshots
• Description of the problem
• Troubleshooting steps you have already attempted

Providing these details can make the conversation much more efficient.

Important Security Warning

Always use Microsoft’s official website when looking for technical support.

Be cautious about phone numbers or support websites found through random search results. Scammers sometimes impersonate Microsoft Support.

Use the official Microsoft domain:

support.microsoft.com

Never give your Microsoft account password to an unofficial technician or support service.

Frequently Asked Questions

Can I talk to a real person at Microsoft about my Surface?

Yes. Microsoft offers support options that can include live assistance, although the options available can vary depending on the product, account, location, and current support availability.

What should I type to reach Microsoft live chat?

Try typing:

“Chat with an agent”

Then look for Contact Support and follow the prompts.

Do I need to sign in to Microsoft?

It is recommended to sign in with the Microsoft account associated with your Surface device before requesting support.

Is there a special Surface keyboard shortcut for live support?

No universal keyboard shortcut directly connects a Surface device to a Microsoft support agent.

Final Takeaway

The next time you’re stuck with a Microsoft Surface problem and simply want to talk to a real human being, try this route:

Microsoft Contact Us → Sign in → “Chat with an agent” → Contact Support → Select your Surface → Follow the prompts.

It may save you from spending a long time searching through Microsoft’s automated support system.

One user recently discovered this after swapping the pen and keyboard between two identical Surface Pro 8 devices. The troubleshooting process quickly revealed that the keyboard’s charging hardware—not the pen or the Surface tablet—had failed.

Here’s how to identify the problem and what you can do about it.

The Problem

A Surface Slim Pen suddenly stopped charging on a Surface Pro 8.

The user noticed the following:

• The pen would not charge on their Surface Pro 8.
• No white charging light appeared when the pen was docked in their keyboard.
• The same pen charged normally on their wife’s Surface Pro 8.
• The white charging LED appeared immediately when connected to her keyboard.
• Swapping keyboards confirmed the issue:
  • Wife’s keyboard charged the pen on either Surface.
  • User’s keyboard failed to charge the pen on either Surface.

This simple test eliminated both the pen and the tablet as possible causes.

What This Means

Because:

• the pen works,
• the Surface Pro 8 works, and
• another compatible keyboard charges the pen correctly,

the fault is almost certainly inside the Surface Signature Keyboard’s pen charging circuit.

Troubleshooting Steps

Before replacing the keyboard, try these checks.

1. Inspect the Pen Charging Slot

Remove the pen from the keyboard.

Look carefully for:

• Dust
• Dirt
• Debris
• Physical damage
• Foreign objects

Even a small amount of debris can prevent good electrical contact.

2. Clean the Charging Contacts

Use a:

• dry microfiber cloth
• soft lint-free cloth

Gently wipe the charging area.

Do not use:

• water
• alcohol
• abrasive cleaners
• metal tools

These can damage the charging contacts.

3. Ensure the Pen Seats Properly

The Surface Slim Pen should:

• snap firmly into place
• align automatically using the built-in magnets
• remain securely attached

If the pen feels loose or doesn’t align correctly, charging may not occur.

4. Check the Keyboard Connector

Inspect the connector where the keyboard attaches to the Surface.

Look for:

• dirt
• bent pins
• corrosion
• physical damage

If necessary, clean the connector gently with a microfiber cloth.

5. Install Windows and Surface Firmware Updates

Although firmware updates rarely repair a failed charging circuit, it’s still worth making sure everything is fully updated.

Install:

• Windows Updates
• Surface firmware updates
• Driver updates

Restart the Surface after installing updates.

Perform a Simple Cross-Test

One of the fastest ways to isolate the problem is to swap components with another compatible Surface.

If you get these results, the issue is almost certainly the keyboard.

Why This Happens

The Surface Signature Keyboard contains its own charging electronics for the Surface Slim Pen.

Over time, these components can fail because of:

• normal wear
• physical stress
• liquid exposure
• internal hardware failure

Unfortunately, these charging components are sealed inside the keyboard and are not user-serviceable.

Can It Be Repaired?

In most cases:

No.

Microsoft does not provide individual replacement parts for the pen charging circuitry inside the keyboard.

Replacing the charging electronics is generally not practical.

If Your Keyboard Is Still Under Warranty

If the keyboard is still covered:

• Contact Microsoft Support.
• Explain that:
  • the pen charges correctly on another Surface keyboard,
  • your keyboard fails to charge any compatible Slim Pen,
  • cross-testing confirms the keyboard is faulty.

Microsoft may replace the keyboard if it qualifies under warranty.

If It’s Out of Warranty

If warranty coverage has expired, replacing the Surface Pro Signature Keyboard is usually the only practical solution.

Before purchasing a replacement:

• Confirm the pen works normally on another keyboard.
• Verify the Surface itself is functioning correctly.
• Rule out debris and connector issues.

Doing these checks can save you from unnecessarily replacing the pen or the tablet.

Final Verdict

When a Surface Slim Pen charges normally on another Surface Pro Signature Keyboard but refuses to charge on yours, the evidence strongly points to a faulty keyboard charging circuit.

Cleaning the contacts and checking for firmware updates are worthwhile first steps, but if cross-testing consistently shows the keyboard is the only component that fails, replacement is typically the only reliable fix.

If you’ve already tried the basic troubleshooting steps from Microsoft’s support pages without success, don’t panic. In many cases, the problem can be resolved with a few advanced troubleshooting techniques before considering hardware repair.

A Surface Pro owner reported the following issue:

The Problem:

“I’ve had the device for about a year now, and suddenly the Surface Pen and keyboard are no longer connected or recognized. I’ve already tried the troubleshooting methods on Microsoft’s website. Is there anything else I can do?”

When both accessories fail simultaneously, the cause is usually deeper than a simple pairing issue. The problem may involve Bluetooth, firmware, device drivers, or even the Surface connector itself.

Resolution:

1. Check Device Manager for Hidden Bluetooth Devices

Sometimes Windows keeps old or corrupted Bluetooth device entries that interfere with new connections.

Steps:

1. Press Windows + X and select Device Manager.
2. Click View → Show hidden devices.
3. Expand the Bluetooth section.
4. Look for:
   • Greyed-out Surface Pen entries
   • Greyed-out Surface Type Cover entries
   • Duplicate devices
   • Bluetooth devices showing a yellow warning icon
5. Uninstall only the inactive or duplicate entries.
6. Do not uninstall the active Bluetooth radio.
7. Restart your Surface.
8. Windows will automatically reinstall clean drivers during startup.

2. Perform a Surface Hard Reset

A normal restart doesn’t always reset the embedded controller responsible for managing the keyboard connector and wireless accessories.

How to do it:

1. Shut down the Surface completely.
2. Press and hold Volume Up + Power together.
3. Continue holding for 15–20 seconds until the screen flashes once.
4. Release both buttons.
5. Turn the Surface back on normally.

This process resets the embedded controller and often restores communication with both the Pen and Type Cover.

3. Check for Stuck Firmware Updates

Incomplete firmware updates can leave the Bluetooth subsystem or Surface hardware in an unstable state.

Verify updates

Go to:

Settings → Windows Update → Advanced Options → Optional Updates

Also open the Surface app and check for:

• Surface firmware updates
• Bluetooth firmware
• Surface System Aggregator updates

Install every available update and restart the device.

4. Clean and Re-seat the Type Cover Connector

Many users assume the keyboard uses Bluetooth.

It doesn’t.

The Surface Type Cover connects through the magnetic pogo-pin connector located at the bottom of the tablet.

After months of use, dust, oxidation, or oils from your hands may interfere with the connection.

Cleaning steps

• Detach the Type Cover.
• Clean the gold contacts on both the Surface and the keyboard.
• Use:
  • a dry microfiber cloth, or
  • a cotton swab lightly dampened with isopropyl alcohol.
• Allow it to dry completely.
• Reattach the keyboard firmly.

This simple step solves more problems than many people expect.

5. Test with Another Surface Pen or Type Cover

If possible, borrow another compatible:

• Surface Pen
• Surface Type Cover

Testing with known-working accessories quickly identifies where the fault lies.

If another keyboard and pen also fail, the issue almost certainly resides inside the Surface Pro rather than the accessories themselves.

6. Reinstall Surface System Drivers

Corrupted drivers can prevent Windows from recognizing Surface accessories.

In Device Manager

Uninstall:

• Surface System Aggregator
• Bluetooth drivers

When prompted, select:

Delete the driver software for this device

Restart the Surface.

Windows Update will automatically download and install fresh Microsoft-certified drivers.

The Surface System Aggregator is particularly important because it manages communication between Windows and much of the Surface hardware.

7. Consider a Hardware Issue

If none of the previous steps work, the problem is likely hardware-related.

Possible causes include:

• Failed Type Cover connector board
• Faulty Bluetooth module
• Internal hardware failure
• Damaged Surface connector

Since the device is only about a year old, it may still be covered under the standard warranty or an extended protection plan such as Microsoft Complete.

At this stage, contacting Microsoft Surface Support is the best course of action rather than continuing with additional software troubleshooting.

Why Do the Pen and Keyboard Fail Together?

Although the Surface Pen uses Bluetooth and the Type Cover uses physical connector pins, both rely on several common system components, including:

• Surface System Aggregator
• Embedded Controller (EC)
• Surface firmware
• Windows device drivers

If one of these components becomes corrupted or stops responding, both accessories may appear to fail simultaneously.

Final Thoughts

When both your Surface Pen and Type Cover stop working at the same time, it can seem like a major hardware failure. Fortunately, many cases are resolved through careful troubleshooting.

Before assuming the worst, work through these steps:

• Remove hidden Bluetooth devices.
• Perform a Surface hard reset.
• Install pending firmware updates.
• Clean the Type Cover connector.
• Test with known-working accessories.
• Reinstall Surface drivers.

If the issue persists after completing these steps, it’s likely a hardware problem that requires professional service.

A systematic approach can often save hours of frustration—and in many cases, avoid an unnecessary repair or replacement.

If those standard fixes haven’t solved the issue, don’t give up yet. Here are several advanced troubleshooting methods that can help determine whether the problem is caused by Windows or the touchpad hardware itself.

1. Reset the Touchpad Settings

Windows allows you to reset the touchpad configuration to its default state.

Steps:

1. Open Settings.
2. Go to Bluetooth & devices > Touchpad.
3. Scroll to the bottom of the page.
4. Click Reset.

This restores the touchpad settings and driver configuration to their default values, which can resolve problems caused by incorrect settings or corrupted configurations.

2. Test the Touchpad in Surface UEFI

One of the best ways to determine whether the problem is hardware-related is by testing the touchpad outside of Windows.

How to Enter UEFI

1. Shut down your Surface completely.
2. Press and hold the Volume Up button.
3. While holding Volume Up, press the Power button.
4. Release the Power button when the Surface logo appears.
5. Continue holding Volume Up until the UEFI menu opens.

Now test the touchpad.

What the Results Mean

• Touchpad clicks are still intermittent: This strongly suggests a hardware issue with the touchpad or its connection.
• Touchpad works perfectly: Windows, drivers, or installed software are the more likely cause of the problem.

This simple test can save hours of unnecessary software troubleshooting.

3. Boot into Safe Mode

Safe Mode loads Windows with only essential drivers and services.

If the touchpad works normally in Safe Mode, it’s a strong indication that:

• A third-party application
• Background software
• Startup program
• Driver conflict

is interfering with the touchpad during a normal Windows session.

If the issue remains even in Safe Mode, the cause is more likely to be a Windows component or hardware.

4. Run the Surface Diagnostic Toolkit

If the above tests don’t identify the problem, Microsoft’s Surface Diagnostic Toolkit is the next recommended step.

The toolkit checks:

• Surface hardware
• Firmware
• Drivers
• Battery
• Touchpad-related components

It can automatically detect and repair certain issues.

5. Perform a USB Recovery Image Reinstallation

If software corruption is suspected and every other troubleshooting step has failed, consider reinstalling Windows using the official Surface USB Recovery Image.

Unlike a standard Windows reset, a recovery image reinstalls:

• Surface-specific drivers
• Firmware
• Factory software configuration

This provides the cleanest possible software environment before concluding that hardware repair is necessary.

When Is It Time for Hardware Service?

If you’ve:

• Reset the touchpad settings,
• Tested it in UEFI,
• Tried Safe Mode,
• Run the Surface Diagnostic Toolkit, and
• Reinstalled Windows using the official recovery image,

and the touchpad still behaves the same—especially if the issue is present in the UEFI environment—it’s very likely a hardware fault.

Possible causes include:

• A failing touchpad assembly
• Internal ribbon cable issues
• Wear from prolonged use
• A defective click mechanism

At this stage, contacting Microsoft Support or an authorized Surface service center is the most practical next step.

Final Thoughts

Intermittent touchpad clicks can be frustrating because the issue may appear random. However, testing the touchpad outside of Windows—particularly in the Surface UEFI menu—is one of the fastest ways to determine whether you’re dealing with a software problem or a hardware failure.

By following these advanced troubleshooting steps, you can confidently identify the root cause and avoid unnecessary repairs or software reinstalls

Problem:

I’m facing a frequent Wi-Fi connectivity issue with one of our Surface Laptop 7th Edition devices that uses a Qualcomm processor and Qualcomm FastConnect 7800 Wi-Fi adapter. The connection keeps dropping, and in Device Manager it shows Error Code 10: “Status_Device_Power_Failure.”

I’ve already installed the Surface utility, completed all available updates, and also manually downloaded and installed the latest drivers from the Microsoft Update Catalog. However, the issue still occurs regularly.

The Realtek USB LAN controller works perfectly fine, so the problem seems specific to the built-in Wi-Fi adapter.’

Resolution:

If you’ve already tried all the usual fixes—updating drivers, installing the latest Surface updates, and even reinstalling everything—but the problem still keeps coming back, it’s time to look at the error more closely.

The system is showing Code 10: “Status_Device_Power_Failure.” This isn’t your typical software issue or a simple driver problem. It usually indicates something deeper, like a hardware or firmware fault, especially related to how the Wi-Fi adapter is getting power.

Also, since your external USB LAN adapter is working perfectly, we can safely rule out general network or Windows issues. That points directly to a problem with the built-in Wi-Fi hardware itself.

When you put all this together, it strongly suggests that the internal Wi-Fi module is faulty. In situations like this, software fixes won’t really solve the problem permanently.

What should you do?
The most practical solution is to go for a replacement—especially if the device is still under warranty.