Win32kfull.sys ensures a secure communication between a hardware and the Windows OS. If communication between these core component are compromised, the system may run into BSOD error. Although the issue is something else, the system may suggest that a system file named win32kfull.sys has failed.
What Causes win32kfull.sys Failed BSOD Error?
Before we get into the fixes, let us look at a the reasons that may cause win32kfull system file to fail. As discussed above, there are several reasons this happens. Some basic and common things that may happen in any PCs are outdated or incompatible drivers.
All win32kfull.sys Blue Screen Stop Code
Once the win32kfull.sys system file fails, it only causes more critical processes in Windows to fail. This will result in the PC giving a BSOD error with a wide range of STOP CODE. Here are some of the stop codes you may get when a win32kfull.sys fails.
APC_INDEX_MISMATCHSYSTEM_SERVICE_EXCEPTIONPAGE_FAULT_IN_NONPAGED_AREADRIVER_IRQL_NOT_LESS_OR_EQUAL
How to Fix win32kfull.sys Failed BSOD Error?
Before we start with the solution, we have mentioned a method to determine the cause of the blue screen using event viewer. You can skip the first step if you have already checked the Event Viewer.
Check Event Viewer
The event viewer records all the events the system runs into. It also keeps tabs on all the errors in the system. With this said, it is only ideal to assume that you can check events that occurred near the blue screen to determine the exact cause of the issue. To check the event viewer, If it indicates any application causing the issue, it is best that you remove said application. You can also use dump files to determine the exact cause of the error message.
Disable Driver Verifier
According to Microsoft official documentation, Driver Verifier checks Windows graphics drivers and drivers that operate at the kernel level for illegal function calls that might corrupt the system. This can subject Windows drivers to various stress tests to find any irregular behavior, resulting in a blue screen error. Try disabling Driver Verifier to check if it fixes the BSOD error. Alternatively, you can use the command prompt to disable the driver verifier.
Check Memory Module
The OS, or the system files, must be loaded into your RAM for the processor to access them. And if you have faulty RAM, the files responsible for running Windows may not work, resulting in the blue screen error. You need to test your memory module to check if this is true. You can run the Memory Diagnostic Tool to see if you have a faulty memory. The PC will now run a series of tests to check your memory. If the PC reports any issues, the issue is likely with the RAM sticks. To check this, try using one RAM stick at a time. If you are using a single memory stick, replace it with a functioning RAM and see if the issue persists. To access RAM in your system, follow the steps mentioned below.
Run SFC and DISM
Since wun32kfull.sys is a system file, you can try running the SFC command. The SFC, or the System file checker command, checks the integrity and repairs all the system files. Similarly, the DISM, or the Deployment Image Servicing and Management, allows the admin to scan and fix Windows Image.
Check Storage Device
The Storage device may suffer from random bad sectors or corrupted data. A storage device containing OS suffering from these issues may cause random and frequent BSOD. To check if the storage device is not faulty, you can try running the Check Disk command. The PC will now run the CheckDisk command on C drive once the PC restarts.
/f fixes any errors on the disk./r locates bad sectors and tries to recover data from the sector.
Perform Clean Boot
Third-party applications can run their own services, which may conflict with Windows services. The system will display a blue screen error if Windows runs into a complication that stops critical processes. Try performing a clean boot to check if service from a third-party application is causing the issue. To perform a clean boot,
Update/Reinstall Driver
Corrupted or outdated drivers may not communicate with the OS efficiently. When this happens, its device will face issues transferring data with Windows. The OS, in turn, may not be able to manage memory when using devices with corrupted drivers. To fix this, try updating your device drives.
