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Medium•20 min

How to fix the Blue Screen of Death on Windows

A blue screen of death usually means Windows hit a serious error and had to restart to protect your PC. It can happen because of a bad driver, a Windows update issue, corrupted system files, failing hardware, or a recently installed app. This guide walks you through the most practical fixes, starting with the easiest ones first.

Symptoms

  • The screen turns blue and the PC restarts
  • You see a stop code such as IRQL_NOT_LESS_OR_EQUAL or MEMORY_MANAGEMENT
  • Windows keeps crashing during startup
  • The blue screen appears after installing a driver, app, or update

Step-by-step fix

  1. 1

    Restart and note the stop code

    If the blue screen happened only once, restart your PC and see whether Windows loads normally. If it happens again, write down the stop code and any file name shown on the screen. This information helps you narrow down whether the problem is a driver, update, or hardware issue.

  2. 2

    Unplug new devices

    Disconnect any recently added hardware such as printers, USB drives, adapters, docks, or external hard drives. Restart the PC after removing them. A faulty device or driver can trigger a blue screen, especially if the issue started right after you plugged something in.

  3. 3

    Boot into Safe Mode

    If Windows keeps crashing, start in Safe Mode so it loads only the basics. On many Windows 10 and 11 PCs, you can reach the recovery screen by interrupting startup a few times, then choose Troubleshoot, Advanced options, Startup Settings, and Restart. After the restart, press the number for Safe Mode or Safe Mode with Networking.

  4. 4

    Remove recent updates or software

    If the problem began after a Windows update or new app, remove the most recent change. In Windows, open Settings, then check Windows Update for recent update history, or open Apps to uninstall recently installed programs. Reboot and test again. This is one of the quickest ways to reverse a change that caused instability.

  5. 5

    Update or roll back drivers

    Drivers control hardware such as graphics cards, Wi-Fi adapters, storage devices, and printers. Open Device Manager, find the device that may be involved, and choose Update driver. If the blue screens started after a driver update, open the device's Properties and use Roll Back Driver if the option is available. Focus first on graphics, storage, and network drivers because they often cause crashes.

  6. 6

    Run Windows Update

    Install any available Windows updates, including optional updates if you trust the source and the device is stable enough to do so. Go to Settings > Windows Update and install everything pending, then restart. Microsoft often fixes crash-related problems through cumulative updates and driver updates.

  7. 7

    Repair system files

    Corrupted Windows files can cause blue screens. Open Command Prompt as an administrator and run sfc /scannow. If Windows reports problems it could not fix, run DISM /Online /Cleanup-Image /RestoreHealth and then run sfc /scannow again. These tools check and repair core system files Windows depends on.

  8. 8

    Check for malware and failing hardware

    Run a full security scan with Windows Security to rule out malware. If crashes continue, test the memory and storage. Use Windows Memory Diagnostic to check RAM, and check your drive health with built-in tools or the manufacturer's diagnostic app. Repeated blue screens with different stop codes can point to bad memory, a failing SSD or hard drive, or overheating.

Frequently asked questions

What is the most common cause of a blue screen?

The most common causes are faulty drivers, Windows updates, corrupted system files, and hardware problems such as bad memory or a failing drive.

Can I fix a blue screen without losing files?

Yes. Most blue screen fixes, such as Safe Mode troubleshooting, driver updates, Windows updates, and system file repair, do not erase personal files. If the problem is hardware-related, your files are usually still safe, but back them up as soon as you can.

What should I do if Windows will not boot at all?

Use the Windows recovery screen to start in Safe Mode, run Startup Repair, or use System Restore if you have a restore point. If you still cannot boot, the issue may be a damaged driver, corrupted system files, or a failing drive.

Should I reinstall Windows to fix blue screens?

Only after you have tried the common fixes first. Reinstalling Windows can help if the system is badly corrupted, but it is a bigger step and should usually be saved for last.

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