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nvpcf.sys is part of NVIDIA software. If you get blue screens after updating, try this: fully remove NVIDIA drivers using DDU, then reinstall the latest drivers. Turn off any GPU tools like overclocking apps. Run sfc /scannow to fix system files. Update other drivers and Windows. Test your memory and GPU for hardware issues. If the problem started after a driver update, try an older driver. If it still crashes, the full error code can help.
vgk.sys is part of Riot Vanguard, the anti-cheat system for Valorant. If it causes blue screen crashes, run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth in an administrator Command Prompt.
Disable or uninstall any other antivirus or anti-cheat programs that might conflict with Vanguard. Update or roll back your graphics and network drivers. Do a clean boot to check for software conflicts.
Make sure the Vanguard service is running and update your BIOS if needed. Finally, uninstall Vanguard and Valorant completely, restart your PC, and reinstall them.
@johnjacobb40, you are right. You’ve done most of the necessary steps already. Next, confirm that your CPU supports CET and enable CET or Shadow Stack in your BIOS. Make sure all your drivers are up to date, and if you’re using Windows Pro or Enterprise, check the Group Policy settings. Also, verify that Memory Integrity is enabled in Windows Security. Running system file checks using sfc /scannow and DISM /RestoreHealth can help fix any issues. If the feature still doesn’t turn on, check the Event Viewer for errors, as some drivers might be blocking it.
Since you’ve enabled virtualization, Secure Boot, TPM, and Memory Integrity, try these:
1. Make sure your CPU supports CET (most 12th Gen Intel do).
2. Check BIOS/UEFI and enable CET or Shadow Stack if available.
3. Update all drivers, especially chipset and GPU.
4. If using Windows Pro/Enterprise, check Group Policy settings for Device Guard.
5. Verify Memory Integrity is on in Windows Security.
6. Run sfc /scannow and DISM /RestoreHealth to fix system files.
If it’s still off, check Event Viewer for errors—some drivers or software may block it.
My PC’s CPU usage is very high because of WMI Provider Host (WmiPrvSE.exe). It stays around 30-40% all the time.
Does anyone know how to fix this?
I’m getting the error ‘Required Files are not trusted’ on Windows and can’t proceed.
Has anyone fixed this? What should I do to solve it?
Thanks!
I’m getting the error message “Trusted Platform Module (TPM) has malfunctioned” on my PC.
Has anyone dealt with this before? What’s the best way to fix it?
Thanks!
I’m getting the error code 0xC1900101 – 0x20004 when trying to install Windows. The installation fails and rolls back.
Has anyone fixed this before? What steps worked to solve it?
Thanks!
I’m getting a blue screen with nvpcf.sys error. I updated my NVIDIA drivers and Windows, but it still happens. How can I fix this?
I keep getting a blue screen because of vgk.sys on Windows 11. I updated everything and reinstalled Vanguard, but it still crashes.
Any fix for this?
I’m using Windows 11 with an Intel i7-12700 CPU. Features like virtualization, Secure Boot, TPM, and Memory Integrity are all turned on. Everything is up to date.
But Kernel-Mode Hardware-Enforced Stack Protection is still off.
How do I turn it on? Could a driver be blocking it?
Thanks for any help.
Is the SD card visible on your phone but not on your mother’s phone? If that’s the case, why don’t you simply insert the SD card into your phone and make a backup of all the data?
The afd.sys BSOD usually happens because of network problems. To fix it, reset your network by running these commands in Command Prompt:
netsh int ip reset
netsh winsock reset
ipconfig /flushdns
Update or roll back your network drivers. Make sure Windows is up to date. Try turning off your antivirus or firewall for a bit to see if that helps. Run sfc /scannow to fix system files. Also, check your router and cables. If it still crashes, try restoring Windows or reinstalling it.
To fix the amdppm.sys BSOD, start by completely removing your AMD drivers using the AMD Cleanup Utility, then reinstall the latest chipset and graphics drivers from AMD’s website. Make sure your BIOS is updated to the newest version, and disable AMD power-saving features like Cool’n’Quiet or C-State in the BIOS settings. Keep your Windows system fully updated. Also, check your RAM and hard drive for errors using built-in diagnostic tools. Finally, perform a clean boot by disabling all non-Microsoft startup programs and services to rule out software conflicts. If the problem continues, use tools like BlueScreenView to analyze crash files for more details.
The 0xC1900101 – 0x20004 error means a driver or compatibility problem is stopping Windows from installing. To fix it, unplug extra devices, update your drivers, and free up disk space. Turn off antivirus, check and update your BIOS, and run the Windows Update Troubleshooter. Try a clean boot or install Windows from a USB. If it still fails, check for bad drivers and update or remove them.