How to Fix Blue Screen of Death (BSOD) on Windows 10 and 11
The Blue Screen of Death (BSOD) is one of the most dreaded errors on Windows. It means your system encountered a critical error it couldn’t recover from and had to shut down to prevent damage. The good news is that most BSODs are fixable. This guide covers the most common causes and proven fixes for blue screen errors on Windows 10 and 11 in 2026.
Common BSOD Error Codes and What They Mean
IRQL_NOT_LESS_OR_EQUAL — usually caused by a faulty driver or incompatible hardware. KERNEL_SECURITY_CHECK_FAILURE — often a driver conflict or corrupted system file. PAGE_FAULT_IN_NONPAGED_AREA — typically a RAM problem or corrupted driver. SYSTEM_SERVICE_EXCEPTION — caused by a buggy driver or corrupted system file. CRITICAL_PROCESS_DIED — a critical system process stopped working, often due to corrupted files or bad drivers. DPC_WATCHDOG_VIOLATION — usually a storage driver issue, common with SSD firmware problems. Write down or take a photo of the error code on your blue screen — it’s key to diagnosing the issue.
Fix 1: Restart and Check If It Happens Again
Sometimes a BSOD is a one-time fluke caused by a temporary software conflict. Restart your computer normally. If it boots fine and the BSOD doesn’t recur, it may have been a one-off. Keep using your computer and monitor for the issue. If the BSOD happens repeatedly, continue with the fixes below.
Fix 2: Boot into Safe Mode
If your computer is stuck in a BSOD loop, you need Safe Mode. Interrupt the boot process 3 times by holding the power button during startup — Windows will enter the Recovery Environment. Go to Troubleshoot > Advanced options > Startup Settings > Restart. Press 4 or F4 for Safe Mode, or 5 or F5 for Safe Mode with Networking. In Safe Mode, only essential drivers and services load, which helps you troubleshoot the cause.
Fix 3: Update or Roll Back Drivers
Faulty drivers are the number one cause of BSODs. In Safe Mode (or normal mode if you can boot), open Device Manager (right-click Start > Device Manager). Look for devices with yellow exclamation marks — these have driver issues. Right-click the device and select Update driver > Search automatically. If the BSOD started after a recent driver update, right-click the device, select Properties > Driver tab > Roll Back Driver. Pay special attention to graphics drivers, network adapters, and storage controllers.
Fix 4: Run Windows Memory Diagnostic
Bad RAM is a common BSOD culprit. Press Windows + R, type mdsched.exe, and press Enter. Click Restart now and check for problems. Your computer will restart and test your RAM. After the test, your computer restarts normally and shows results. If errors are found, you likely need to replace a RAM stick. To identify which one, try removing one stick at a time and testing.
Fix 5: Run System File Checker (SFC) and DISM
Corrupted system files cause many BSODs. Open Command Prompt as Administrator (search "cmd", right-click, select "Run as administrator"). Run sfc /scannow and wait for it to complete. If SFC finds issues it can’t fix, run DISM /Online /Cleanup-Image /RestoreHealth first, then run SFC again. These tools scan and repair corrupted Windows system files.
Fix 6: Check for Windows Updates
Microsoft frequently releases patches that fix BSOD-causing bugs. Go to Settings > Windows Update > Check for updates. Install all available updates, including optional quality updates and driver updates. Restart your computer after updating.
Fix 7: Check Your Hard Drive/SSD
A failing storage drive can cause BSODs. Open Command Prompt as Administrator and run chkdsk C: /f /r. You’ll be prompted to schedule the check for the next restart — type Y and restart. The check can take 30 minutes to several hours depending on drive size. If your drive has bad sectors, consider replacing it — a failing drive will only get worse.
Fix 8: Undo Recent Changes
Think about what changed before the BSODs started. If you recently installed new software, uninstall it. If you recently installed hardware, remove it and test. If you recently updated Windows, go to Settings > Windows Update > Update history > Uninstall updates and remove the latest update. Use System Restore to revert to a point before the problems started: search for "Create a restore point" > click System Restore > choose a restore point from before the BSODs began.
Fix 9: Check for Overheating
Overheating can cause BSODs, especially under load. Check your CPU temperature using HWMonitor or Core Temp. If temps exceed 90°C, clean dust from fans and heatsinks, reapply thermal paste, and ensure proper airflow. BSODs that happen during gaming or heavy workloads often point to overheating.
When to Reinstall Windows
If none of the above fixes work and BSODs persist, a clean Windows installation may be necessary. Back up your important files first. Go to Settings > System > Recovery > Reset this PC. Choose Remove everything for a clean start, or Keep my files to preserve personal data while reinstalling Windows. This resolves almost all software-related BSOD causes.
Frequently Asked Questions
Can a virus cause a blue screen? Yes, though it’s uncommon. Run a full antivirus scan with Windows Defender or another reputable antivirus to rule it out.
Is a BSOD dangerous to my computer? The BSOD itself isn’t dangerous — it’s actually a protective mechanism. However, the underlying cause (like a failing drive or overheating) could lead to data loss if not addressed.
Why does my BSOD happen at random times? Random BSODs often point to RAM issues, intermittent driver bugs, or a slowly failing hard drive. Run memory diagnostics and check your drive health.
Should I worry about a one-time BSOD? Not necessarily. A single BSOD can be a harmless fluke. Only investigate if it happens repeatedly.
