Fix Windows Blue Screen Error
A Windows blue screen error (also called BSOD — Blue Screen of Death) appears when Windows meets a serious problem. The PC will usually stop, show a blue screen with an error name or code, and restart. This guide gives clear, step-by-step fixes you can try at home. The language is simple and the steps are professional and practical. Follow them in order for best results.
Quick checklist (start here)
- Note the error code shown on the blue screen (for example:
IRQL_NOT_LESS_OR_EQUAL,SYSTEM_THREAD_EXCEPTION_NOT_HANDLED, or a hex code like0x0000007E). - If possible, take a photo of the blue screen.
- Restart and see if the error returns. If it happens once, it might be a one-time glitch; if repeated, follow the steps below.
Step 1 — Boot into Safe Mode
Safe Mode starts Windows with only the basic drivers. This helps you check if the problem is caused by a driver or startup app.
How to enter Safe Mode:
- If Windows can start: Settings → Update & Security → Recovery → Advanced startup → Restart now → Troubleshoot → Advanced options → Startup Settings → Restart → press 4 for Safe Mode.
- If Windows won’t start: turn the PC on and off three times at the power button until you see the recovery screen, then follow the path above.
What to do in Safe Mode: uninstall recent software, update or roll back drivers, run antivirus scans.
If You want Troubleshoot Your Mobile Read This:
Mobile Troubleshooting Solutions – A Complete Guide for Everyday Users
Step 2 — Check for recent changes
Think about what changed before the blue screen started:
- New hardware (USB device, RAM, graphics card)? Remove it and test.
- New software or driver installed? Uninstall it.
- Windows update just installed? Try uninstalling recent updates in Safe Mode.
Sometimes rolling back the last change fixes the error quickly.
Step 3 — Update or roll back drivers
Faulty drivers are a common cause.
Update drivers:
- Open Device Manager (press Windows + X → Device Manager).
- Look for devices with a yellow warning sign.
- Right-click → Update driver → Search automatically.
Roll back drivers: If the error started after a driver update, open Device Manager → right-click device → Properties → Driver tab → Roll Back Driver.
If you updated a graphics driver just before the BSOD, roll back or reinstall the driver from the official vendor website (NVIDIA, AMD, Intel).
Step 4 — Run built-in Windows tools
Use Windows tools to find and fix system errors.
System File Checker (SFC):
- Open Command Prompt as admin (type
cmd, right-click → Run as administrator). - Run:
sfc /scannow
This checks protected system files and repairs damaged files.
DISM tool (if SFC finds issues):
Run as admin:
DISM /Online /Cleanup-Image /RestoreHealth
CHKDSK to check disk:
Run as admin:
chkdsk C: /f /r
You may need to restart the PC for CHKDSK to run.
Step 5 — Check RAM and hardware
Bad memory or failing hardware leads to blue screens.
Test RAM: Use Windows Memory Diagnostic (type mdsched and follow prompts) or use MemTest86 (bootable tool). If tests show errors, replace the faulty RAM stick.
Check hard drive health: Use chkdsk above, or use a SMART tool like CrystalDiskInfo to check drive health. Replace drive if it has many bad sectors.
Disconnect extra devices: Remove USB drives, printers, or other peripherals and test.
Step 6 — Scan for malware
Malware can corrupt system files and cause BSODs. Run a full scan with your antivirus. If you don’t have one, use Microsoft Defender (built into Windows) or a trusted scanner (Malwarebytes). Remove any threats found.
Step 7 — Use System Restore or Reset
If the problem started recently and nothing else worked:
System Restore: Restore Windows to a point before the error started. Type rstrui in Run (Windows + R) and follow the wizard. This keeps your files but removes apps and drivers installed after that point.
Reset this PC: Settings → Update & Security → Recovery → Reset this PC. Choose to keep files or remove everything. This step reinstalls Windows and often fixes persistent BSODs, but backup your important files first.
Step 8 — Read minidump files for details
Windows saves a small dump file when it crashes. These files help identify the exact driver or module that failed.
Where to find them: C:\Windows\Minidump
Tools to read dumps: BlueScreenView (free) or WinDbg (Microsoft). Look for repeated names (driver .sys) in the dump — this points to the problem driver.
Step 9 — Update Windows and BIOS
Keep your system up to date.
- Windows Update: Settings → Update & Security → Windows Update → Check for updates.
- BIOS/UEFI and firmware: Visit your PC or motherboard maker’s website and update BIOS only if a new version fixes a known issue. Follow instructions carefully.
Step 10 — Prevent future blue screens
- Keep Windows and drivers updated.
- Install trusted antivirus and scan regularly.
- Avoid overclocking hardware; restore default clock speeds if you overclock.
- Monitor system temperature and clean dust from fans.
- Create regular backups and a restore point before major changes.
When to seek professional help
If you tried the steps above and the BSOD continues, ask a technician. Persistent crashes can mean failing hardware (motherboard, power supply) or deep system corruption. A repair shop can run advanced tests and replace parts if needed.
For More Read about Fix Windows Blue Screen Error
- Microsoft support — Blue screen errors: https://support.microsoft.com (search “blue screen errors Windows”)
- MemTest86 (RAM testing): https://www.memtest86.com
- CrystalDiskInfo (disk health): https://crystaldiskinfo.org
Conclusion
Blue screen errors are scary, but most can be fixed by careful, step-by-step troubleshooting: boot into Safe Mode, check recent changes, update or roll back drivers, run system tools (SFC/DISM/CHKDSK), test hardware, scan for malware, and use System Restore or Reset if needed. Take notes during troubleshooting (error codes and recent changes) — this speeds up the fix. Follow the prevention steps to reduce the chance of future BSODs.
FAQ Fix Windows Blue Screen Error
Q1: What causes Windows blue screen error?
Most BSODs happen due to faulty drivers, corrupted system files, malware, overheating, or failing hardware.
Q2: Can a single blue screen be ignored?
Yes, one-time crashes can happen. Repeated BSODs require troubleshooting.
Q3: Is blue screen a hardware problem?
Sometimes yes. Faulty RAM, failing SSD/HDD, or overheating can cause it.
Q4: Will resetting Windows fix the blue screen error?
Yes, a system reset fixes most software-based BSODs.
Q5: How do I stop automatic restart after BSOD?
Go to Control Panel → System → Advanced system settings → Startup and Recovery → uncheck Automatically restart.
Fix Windows Blue Screen Error
