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Timer_or_dpc_invalid BSOD in Windows 10 [Complete Fix]

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If you’re running a third-party antivirus, check the steps below.

Close third-party antivirus 


If you are running a third-party antivirus program, temporarily disable the app. The timer or DPC invalid error can be triggered if the third-party antivirus is creating conflict with the functioning of the system files.

To disable the app temporarily, expand the System Tray icon. Right-click on your antivirus program and select the option to disable it temporarily. 

Open the Task Manager. Go to the Startup tab, right-click the third-party antivirus program and select Disable. Reboot the computer and check if the BSOD error occurs again.

If you deduce the issue to be triggered due to your antivirus program, consider uninstalling the app. We recommend using Malwarebytes for complete protection without affecting your system performance.



Easily remove any possible malware that might be causing the dreaded Timer_or_dpc_invalid BSOD error.

3. Install pending Windows updates 

timer or dpc invalid
  1. Click Start and select Settings.
  2. Go to Update & Security and choose Windows Updates.
  3. Click on Check for updates. Windows will scan for pending updates.
  4. Click the Download button to download pending updates. Some updates may require you to restart your computer to install the updates.

Keeping your Windows up to date is an excellent way to prevent the blue screen of death error due to hardware incompatibility and file corruption.

Windows updates usually offer minor glitch and bug fixes that may trigger BSOD errors. 

4. Run a SFC scan 

timer or dpc invalid
  1. Click Start, type cmd and right-click on Command Prompt.
  2. Select Run as Administrator to open Command Prompt as admin.
  3. In the Command Prompt window, type the following command and hit enter:
    Sfc /scannow 
  4. The System File Checker tool will scan all protected system files. This process may take some time, so wait till it is 100% complete.

The SFC command will scan the protected system files and replace corrupted files with a cached copy located in a compressed folder.

As discussed earlier, do not close the command prompt window till the process is complete. Once done, reboot the computer and check if the timer or DPC invalid error is resolved.

5. Repair bad disk sectors 

timer or dpc invalid
  1. Open the Command Prompt as Administrator. Type cmd in the search, right-click on Command Prompt and select Run as Administrator.
  2. In the Command Prompt window, type the following command and hit enter:
    Chkdsk C: /f /r /x 
  3. The check disk tool may take hours to complete. So, feel free to leave the PC idle for the process to complete. 
  4. Once the process is complete, reboot the computer and check for any improvements.

If you have a PC with traditional hard drives, the disk may create bad areas over a longer period of usage. Disk errors are among the common reasons for the blue screen of death error. 

There are many reasons why you would encounter the timer or DPC invalid BSOD error in Windows 10.

To help you diagnose and fix the problem, we have listed all the practical solutions to help you make the diagnosis easy.

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This post was written by Tashreef Shareef and was first posted to WindowsReport

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