Computer Blue Screen? Every Common BSOD Error and How to Fix It
Blue screens look scary but most are fixable. Here is what each error code means and the step-by-step fix for each one.
What Blue Screens Mean
A Blue Screen of Death means Windows encountered an error so severe it could not continue running safely. Rather than risk data corruption, Windows crashes and restarts. The stop code at the bottom of the blue screen tells you what went wrong. Most blue screens are caused by faulty drivers, hardware problems, or corrupted system files. They are rarely caused by viruses.
MEMORY_MANAGEMENT
This error means Windows detected a problem with RAM. Run Windows Memory Diagnostic by searching for it in the Start menu. It tests your RAM during a restart. If errors are found, you need to identify and replace the faulty RAM stick. If memory tests pass, update your GPU driver from the manufacturer website as GPU memory errors can also trigger this code.
CRITICAL_PROCESS_DIED
A critical Windows process crashed. This is often caused by corrupted system files or a recent driver update. Boot into Safe Mode if you cannot reach the desktop normally. Run sfc /scannow from an elevated Command Prompt. If that finds errors, follow up with DISM /Online /Cleanup-Image /RestoreHealth. If the error started after a driver update, use Device Manager in Safe Mode to roll back the driver.
DRIVER_IRQL_NOT_LESS_OR_EQUAL
A driver tried to access memory it should not have. This is almost always caused by a specific driver. Note the file name shown on the blue screen if visible. Common culprits are network adapters, audio drivers, and antivirus software. Update the driver from the manufacturer website or uninstall the associated software. Older versions of certain antivirus programs are known to cause this error.
KERNEL_DATA_INPAGE_ERROR
This error typically indicates a failing hard drive or SSD. Windows could not read data from the storage device. Run CrystalDiskInfo (free) to check your drive health. If it shows Caution or Bad, your drive is failing and you should back up your data immediately and replace the drive. If the drive health is good, run chkdsk /f /r from an elevated Command Prompt to repair any file system errors.
General Fix for Any Blue Screen
If you do not know the specific error code or the fixes above do not help, try these general steps. Update all drivers, especially GPU, network, and chipset drivers. Run sfc /scannow and DISM repair commands. Check for Windows updates as Microsoft patches blue screen bugs regularly. Uninstall any recently installed software or hardware. If blue screens started after a Windows update, uninstall the latest update from Settings, Windows Update, Update History, Uninstall Updates.
Pro Tips
Frequently Asked Questions
Is a blue screen a virus?
Almost never. Blue screens are caused by hardware failures, driver conflicts, or corrupted system files. Viruses can theoretically cause blue screens by corrupting critical files, but this is extremely rare. Run a malware scan to rule it out, but focus your troubleshooting on drivers and hardware.
Will I lose my files after a blue screen?
No. Blue screens do not delete files. Your data is safe on the hard drive. Windows restarts after a blue screen and everything should be as you left it. The only risk is if you were working on an unsaved document when the blue screen occurred — that unsaved work may be lost.
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