Blue Screen of Death (BSOD)? How to Identify and Fix

Blue screen on Windows? Learn to identify the error by STOP code and fix: driver, RAM, disk, corrupted update.

Blue Screen (BSOD) — Complete Guide

The dreaded blue screen indicates a critical system error. Here's how to fix it:

1. Identify the Error Code

The blue screen shows a STOP code. Most common:

WHEA_UNCORRECTABLE_ERROR → Hardware (RAM or CPU)

KERNEL_DATA_INPAGE_ERROR → Faulty disk

DRIVER_IRQL_NOT_LESS_OR_EQUAL → Incompatible driver

CRITICAL_PROCESS_DIED → Corrupted system file

PAGE_FAULT_IN_NONPAGED_AREA → RAM issue

2. Update All Drivers

Most common BSOD cause is drivers:

Device Manager → update all, especially GPU and chipset

3. Check RAM

Faulty RAM causes BSOD:

Search "Windows Memory Diagnostic" in Start

Run and restart — test takes ~15 minutes

4. Repair System Files

CMD as Admin:

sfc /scannow

If errors found: DISM /Online /Cleanup-Image /RestoreHealth

5. Uninstall Recent Updates

If BSOD started after an update:

Settings → Windows Update → Update history → Uninstall updates

6. Check Disk

CMD as Admin: chkdsk C: /f /r

Restart when prompted

7. Safe Mode

If you can't boot Windows:

Restart 3 times in a row (force shutdown) → Windows will enter recovery mode

Choose Safe Mode with Networking

Want to fix this automatically?

Resolve AI diagnoses and fixes this problem in seconds. Download for free!

Download Resolve AI

Frequently Asked Questions

Blue screen every time I turn on PC, what to do?

Enter Safe Mode (restart 3 times forcing shutdown). There, uninstall recent drivers or updates. If that doesn't work, run sfc /scannow.

BSOD with IRQL_NOT_LESS_OR_EQUAL code, what is it?

Indicates a driver trying to access invalid memory. Usually network or GPU driver. Update or rollback those drivers.