Fix ACPI.sys error on Windows 10

ACPI.sys is a Windows operating system file that is associated with MSDN 2939. The Windows ACPI driver, Acpi.sys, is an inbox component of the Windows operating system. The responsibilities of Acpi.sys include support for power management and Plug and Play (PnP) device enumeration. This file, if corrupted, is known to cause a Blue Screen error. The other reasons include conflicts like RAM, Hard Disk issues, incompatible firmware, corrupt drivers or malware infection, etc. There are some potential fixes & workarounds for the same which we will take a look at today.


There can be the following BSOD Errors that are related to this file:

ACPI.sys Blue Screen error

The following are the potential fixes for the ACPI.sys triggered Blue Screen error,

  1. Update or Rollback the ACPI Driver
  2. Use System File Checker
  3. Use System Restore.

1] Update or Rollback the ACPI Driver

You need to either update or rollback the driver. If you just updated the ACPI driver, and the issue started after that you need to rollback the driver. If you did not, then maybe updating this device driver to its latest version will help.

From the WinX Menu, open Device Manager. Select the ACPI.sys driver, and open Properties with a right-click. Next switch to the Driver section. The rollback is only available if the update was recent. If that’s, not the case, click on Update Driver, and Windows will automatically check for the problems.

If this does not help you may copy the ACPI.sys system driver file from the System32 folder of another good computer running the same Windows OS version and place it on your problematic system and see if that helps.

2] Run System File Checker

You may run System File Checker and see if that helps you.

sfc /scannow

Restart your system after the scan is completed.

You can also use our freeware FixWin to run the System File Checker utility with a click.

3] Using System Restore

You can carry out a System Restore operation by booting into Safe Mode or Advanced Startup Options.

If you are in Advanced Startup Options, you can select System Restore directly and proceed with the steps. If you just booted into Safe Mode, launch sysdm.cpl using the Search box

Select the tab labeled as System Protection and then choose the System Restore button.

It will now open a new window where you will need to choose your desired System Restore Point. After selecting your desired System Restore Point, follow the on-screen instructions to complete the process.

Now reboot your computer and check if this method was able to resolve your issue.

All the best!

Posted by on , in Category Windows with Tags
Ayush has been a Windows enthusiast since the day he got his first PC with Windows 98SE. He is an active Windows Insider since Day 1 and is now a Windows Insider MVP. He has been testing pre-release services on his Windows 10 PC, Lumia, and Android devices.