How to restore your PC to normal after a BSOD error code appears unexpected store expention?

Question

I have an error code on my office PC with a blue screen error "BSOD Unexpected Store Expention." How do I get it back to normal?

Answer 1

Hi rifki maulana,

Welcome to Microsoft Q&A!

I understand how frustrating a BSOD can be, especially on a work PC. Below are some recommended steps to restore the PC to a normal working state after UNEXPECTED STORE EXCEPTION error:

1 - Restart and check if the issue repeats

• Let the PC restart normally after the blue screen.
• Use it for a while and see if the BSOD happens again.
• If it was a one‑time crash, no further action may be needed.

2 - Check and repair Windows system files

• Press Win + X > choose Terminal (Admin) to open PowerShell
• Run these commands one by one (press Enter after each):
  • Dism /Online /Cleanup-Image /RestoreHealth
  • sfc /scannow
  • chkdsk C: /f
• Wait until they finish and restart the PC.

Disclaimer: Running chkdsk can check the file system and file system metadata of a volume for logical and physical errors. To avoid any trouble for you, do not cancel or interrupt chkdsk, and back up important data. More information please refer to this chkdsk | Microsoft Learn.

3 - Update Windows and device drivers

• Go to Settings > Windows Update > Click Check for updates
• Also open Advanced options > Install any Optional updates available.
• If your laptop brand has its own Health app, download and run it to check.

4 - Use Startup Repair if Windows becomes unstable

• Hold Shift and click Restart > keep holding Shift until you get to WinRE
• Go to Troubleshoot > Advanced options > Startup Repair.
• Let Windows attempt automatic repair.

5 - Windows reinstallation (keeping files)

• Use built-in repair option
  • Open Settings > System > Recovery > Fix problems using Windows Update
  • Click Reinstall now > follow the onscreen instructions to reinstall Windows.
• Perform an in-place upgrade:
  • Refer to Reinstall Windows with the installation media - Microsoft Support
  • Navigate to the bottom of the page and expand In-place Upgrade.  
  • You can also check out this guide from our fellow moderator: How to run In-place upgrade in Windows 11 - Microsoft Q&A

Disclaimer: Both Windows reinstallation and in-place upgrade will refresh your Windows files and operating system without removing files or applications. That being said, we always recommend that if you have important data, you should back it up first before making large system changes.

If the BSOD keeps coming back after all steps above, this points to failing hardware (SSD/RAM) or a deeper system issue. At that point, back up important data immediately and get professional help!

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Answer 2

To restore your PC to normal after encountering a BSOD (Blue Screen of Death) error with the code "Unexpected Store Exception," you can follow these troubleshooting steps:

1. Remove Recently Added Hardware or Software: If you have recently added new hardware or software, try removing or uninstalling it to see if that resolves the issue.
2. Update Device Drivers: Open Windows Device Manager and check for any devices that may have a warning symbol (exclamation point). Update the drivers for those devices.
3. Run System File Checker: Use the System File Checker tool to repair missing or corrupted system files. Open Command Prompt as an administrator and run the command SFC /scannow.
4. Check for Disk Errors: Use the Scan Disk utility to check for file system errors. Right-click on the drive in File Explorer, select Properties, go to the Tools tab, and click on Check under Error checking.
5. Free Up Disk Space: Ensure that you have sufficient free space on your hard drive, ideally 10% to 15% of the total capacity.
6. Run Memory Diagnostics: Test your computer's memory using the Windows Memory Diagnostics tool. You can find it by searching for "Memory" in the Control Panel and selecting Diagnose your computer's memory problems.
7. Check for Virus or Malware: Run a virus detection program to ensure that your system is not infected, as malware can cause system corruption leading to BSOD errors.
8. Boot into Safe Mode: If the problem persists, try booting into Safe Mode to troubleshoot further. You can access Safe Mode by going to Control Panel > Settings > Update and Security > Recovery > Advanced startup > Troubleshoot > Advanced Options > Startup Settings > Restart, and then select the appropriate Safe Mode option.

By following these steps, you should be able to identify and resolve the issue causing the BSOD error and restore your PC to normal operation.