The timer or dpc invalid is another BSOD error is another annoying problem that results in forceful reboots of the system. The bugcheck value of 0x000000C7 indicates that a kernel timer or delayed procedure call is found somewhere where it is now allowed in the memory. It can be triggered due to a problematic driver, outdated system file, or even disk issues. In this article, we have compiled a list of possible solutions to help you effectively resolve the timer or dpc invalid error in Windows 10.

How do I fix the timer or dpc invalid BSOD error in Windows 10?

1. Update drivers with DriverFix 

The timer or dpc invalid mmcss.sys blue screen of death error can occur due to a broken or faulty driver. Try updating the concerned driver manually or using the DriverFix utility. DriverFix is a Windows program to update the system drivers as well as other external device drivers with ease. With its huge database of over 18 million drivers, you can quickly update one or multiple devices simultaneously. With a clean user interface, you can manage all the drivers using the built-in driver manager. DriverFix also features a backup and update scheduler to automate the backup and update task. Key features of DriverFix:

One-click download and update off all the driver  Huge database of over 18 million driver files  Built-in Download Manager and Backup Scheduler  Good user interface 

⇒ Get DriverFix

2. Perform a full scan for virus threats 

Windows Defender will scan the system for adware and malware infection. When the scan completes, remove any threat by clicking on Clean threats.   Malware or virus attacks are one of the common reasons for the timer or dpc invalid BSOD error in Windows 10 computers. Make sure to run a full scan frequently to keep your system clean. If you’re running a third-party antivirus, check the steps below. 2.1 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. SPONSORED 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 you switch to another antivirus solution that will not interfere with your system You will be happy to know that the antivirus market doesn’t lack good options for all types of users. Just make sure to get an antivirus that is up to date so it works well with your OS and is able to detect and block all emerging threats. It is also recommended to use a security tool that uses several types of shields to protect your device. This is why we recommend multi-layered protection tools that are able to detect malware, ransomware, phishing attacks, and all sorts of new and old security threats. Also, make sure that the system requirements of your AV of choice match your device. This shouldn’t be an issue for most users because modern-day antiviruses are designed to offer full protection while being very light on the system.

3. Install pending Windows 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 

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 

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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