How to fix
ACPI.sys error
on Windows

I have an issue with my Windows 10. It seems that the driver or a different system file is not accessible. I get ACPI.sys error on my laptop and the corrupted file message scares me. I don't know how to replace such a file on my own. Can you help?

ACPI.sys error in Windows is the Blue Screen of Death[ref en-1] that can cause frustration or even panic among users who get to encounter the issue on their machines. This is a serious problem, but the sooner you react the better. It sometimes causes crashes, prevents the computer from rebooting,[ref en-2] and can trigger major issues. If you encountered the error once or twice, it is the best time to try to solve the reason behind it.

The explanation for the error is the system file that gets corrupted, missing, or damaged. These .SYS files are needed for ensuring the proper performance of the machine, so the problem can keep the machine from running and leads to major crashes or even critical errors.

This system driver has the purpose of managing the Windows performance settings, so power management is not supported, and processes the file is responsible for cannot run smoothly when the piece is not available. These errors can be caused by corrupted drivers, hardware problems, outdated system files, other issues regarding updates, improper installations, or even malware[ref en-3] leftovers.

Typically, the ACPI.sys error in Windows can be solved by treating those drivers or system files. Updating or rolling back the particular driver can solve the issue. It is also possible to resolve the problem with tools like [d1] that checks for the affected files and corrupted pieces in system folders. You can fix issues using the application because it indicates any pieces that require repair.

Other solutions for the issue might require more interaction from you and advanced steps needed for the process renewal. you can solve the issue by running the system file checker utility and recovering those missed files. These more difficult steps are listed below, so you can properly fix the ACPI.sys error in Windows and forget about the critical error blue screen.

1. Run SFC scan

• Press Windows logo key and type cmd in search.
  

  

• Right-click on Command Prompt and click Run as administrator.
• Click Yes when asked to confirm.
• In the command prompt window, type sfc /scannow and press Enter.
• Restart your computer.

2. Run the disk check

• Hit Windows logo key and E at the same time, then click This PC.
  

  

• Right-click on Local Disk and click Properties.
• Click the Tools tab.
  

  

• Then Check.
• Click Scan drive.
  

  

• Follow the on-screen instructions.
• Restart your computer.

3. Perform a System restore

• Press the power button to turn on your PC.
• Then when Windows displays a login screen, long-press the power button to turn it off.
• Do so until the screen says Preparing Automatic Repair.
• Wait for the end of the diagnostic, and click Advanced options.
• Click Troubleshoot.
  

  

• Click  Advanced options.
• Click System Restore.
  

  

• Follow the on-screen instructions.

4. Run Troubleshooter

• Open the Control Panel.
• Go to System and Security.
• Under Security and Maintenance, click on Troubleshoot common computer problems.
• Click on Hardware and Sound and then on Windows Start Apps.
• The Troubleshooter will launch.
• Restart the computer.

5. Check for the Windows OS update or reverse the recent upgrade

• Open a Run box with Windows + R keys.
• Type appwiz.cpl and hit Enter.
• Click on View installed updates and then scroll down to the Microsoft Windows section.
• Right-click on the update and select Uninstall.
• Click Yes in the confirmation prompt.
  

  

• You can also go to Settings and Update & Security.
  

  

  
  
• Check for updates and upgrade the OS.