How to Fix a Blue Screen on Windows

What Causes This?

A blue screen in Windows usually means the system hit a critical error and had to stop to prevent damage. Common causes include faulty drivers, corrupted system files, bad RAM, overheating, failing storage drives, or recent Windows or hardware changes. In some cases, the problem appears after a driver update, a new device installation, or repeated crashes caused by disk errors.

Common Symptoms

• Windows suddenly restarts and shows a blue screen with a stop code
• The PC gets stuck in a restart loop after crashing
• Crashes happen when opening certain apps, gaming, or during startup
• You see messages like CRITICAL_PROCESS_DIED, MEMORY_MANAGEMENT, or IRQL_NOT_LESS_OR_EQUAL
• The system feels unstable after a recent update or driver change

How to Fix It Manually

1. Write down the stop code and restart into Windows

   • When the blue screen appears, note the stop code shown near the bottom.
   • If Windows restarts too quickly, go to Settings > System > About > Advanced system settings.
   • Under Startup and Recovery, click Settings and uncheck Automatically restart.

2. Disconnect recent hardware and uninstall recent drivers or software

   • Remove any new USB devices, external drives, or recently added hardware.
   • Press Windows + X and select Device Manager.
   • Look for devices with a warning icon or anything you recently updated.
   • Right-click the device, choose Properties > Driver, then click Roll Back Driver if available.
   • If the issue started after installing software, open Settings > Apps > Installed apps and uninstall the most recent program.

3. Boot into Safe Mode if Windows keeps crashing

   • Hold Shift and click Restart from the sign-in screen or Start menu.
   • Go to Troubleshoot > Advanced options > Startup Settings > Restart.
   • Press 4 for Safe Mode or 5 for Safe Mode with Networking.
   • In Safe Mode, remove recent drivers, updates, or apps that may be causing the crash.

4. Check Windows system files

   • Open Command Prompt as Administrator: press Windows, type cmd, right-click Command Prompt, and choose Run as administrator.
   • Run this command:

     sfc /scannow

   • Wait for the scan to finish. If it finds issues, restart your PC.
   • Then run:

     DISM /Online /Cleanup-Image /RestoreHealth

5. Check your disk for errors

   • In the same admin Command Prompt, run:

     chkdsk C: /f /r

   • If prompted, type Y to schedule the scan on restart, then reboot.
   • This can help if the blue screen is caused by file system corruption or drive problems.

6. Check for Windows and driver updates

   • Open Settings > Windows Update and click Check for updates.
   • Install all important updates and restart.
   • For graphics, chipset, or storage drivers, download the latest stable version from your PC or motherboard manufacturer’s website instead of relying only on optional updates.

7. Run a memory test

   • Press Windows + R, type mdsched.exe, and press Enter.
   • Choose Restart now and check for problems.
   • If Windows reports memory errors, your RAM may need to be reseated, tested individually, or replaced.

Fix It Automatically with Kudu

After a blue screen, Windows often ends up with leftover temporary files, crash data, and general system clutter that can make troubleshooting harder. Kudu helps clean temporary files and reduce unnecessary junk so your PC is easier to stabilize after recovery. It’s a simple way to handle cleanup automatically instead of digging through Windows folders yourself.

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