How to Fix WHEA_UNCORRECTABLE_ERROR on Windows 11

The dreaded WHEA_UNCORRECTABLE_ERROR — also known as the WHEA Blue Screen of Death (BSOD) — is one of those Windows 11 errors that can send a chill down any PC user’s spine. It usually appears with a blue screen and the stop code: WHEA_UNCORRECTABLE_ERROR

This error indicates that your system has encountered a hardware error that Windows can’t automatically recover from. While that sounds serious, don’t panic — in most cases, it’s caused by software conflicts, driver issues, or overclocking rather than a dead CPU or motherboard.

In this guide, we’ll walk you through how to fix the WHEA_UNCORRECTABLE_ERROR on Windows 11 step by step.

What Causes the WHEA_UNCORRECTABLE_ERROR

This error points to a hardware-related fault, often triggered by one of the following:

Corrupted or outdated device drivers.
Overclocked CPU or GPU.
Faulty RAM or storage device.
Corrupted system files or BIOS settings.
Thermal (overheating) issues.
Power supply or motherboard instability.

Let’s go through the fixes — starting with the simplest and safest first.

Step 1: Restart Your Computer

Before you dive into complex troubleshooting, restart your PC once. Sometimes, the error appears only once due to a temporary voltage or driver issue.

If it reappears consistently, move on to the next steps.

Step 2: Check for Windows Updates

Microsoft frequently releases patches to improve hardware compatibility and driver stability.

Press Windows + I → Windows Update.
Click Check for updates.
Download and install all available updates.
Restart your PC.

If a driver or firmware bug was causing the error, this should resolve it.

Step 3: Update All Device Drivers

Outdated or corrupted drivers — especially for graphics, chipset, or storage — are the most common triggers for WHEA errors.

Automatically via Device Manager:

Press Windows + X → Device Manager.
Expand categories like Display adapters, Processors, Storage controllers, and System devices.
Right-click each device → Update driver → Search automatically for drivers.

Manually via Manufacturer Websites:

If you have a custom-built PC, visit these pages:

Tip: Always restart your PC after major driver updates.

Step 4: Turn Off Overclocking

If you’ve been overclocking your CPU, GPU, or RAM, that’s the most likely cause of the WHEA_UNCORRECTABLE_ERROR.

Turn Off Overclocking via BIOS/UEFI:

Restart your PC and repeatedly press Del, F2, or F10 (depending on your manufacturer) to enter BIOS.
Find the Overclock, AI Tweaker, or Advanced Frequency Settings section.
Set CPU ratio and voltage options back to Auto or Default.
Save changes and exit.

After disabling overclocking, boot into Windows and see if the error persists.

Step 5: Check for Overheating

Thermal instability can trigger hardware errors, especially if your CPU or GPU gets too hot.

Download a monitoring tool like HWMonitor, Core Temp, or MSI Afterburner.
Observe CPU and GPU temperatures while idle and under load.

If you see temperatures above 90°C, it’s overheating.

To Fix:

Clean dust from your fans and vents.
Reapply thermal paste if you’re experienced.
Ensure your PC is well-ventilated.
Check that all fans are spinning correctly.

Step 6: Run the Windows Memory Diagnostic Tool

Faulty RAM can cause WHEA_UNCORRECTABLE_ERROR.

Press Windows + R, type: mdsched.exe and press Enter.
Choose Restart now and check for problems.
Let the test complete — your PC will restart automatically.

If memory errors are found, you’ll need to replace your RAM or test modules individually.

Step 7: Run CHKDSK and SFC Scans

Corrupted system files or bad sectors on your disk can cause hardware exceptions.

Open Command Prompt (Admin).
Run these commands one by one: sfc /scannow DISM /Online /Cleanup-Image /RestoreHealth chkdsk C: /f /r
Type Y and press Enter when prompted.
Restart your PC.

These tools will repair damaged files and mark bad sectors on your drive.

Step 8: Reset BIOS to Default Settings

Incorrect BIOS configuration (especially after updates or hardware changes) can cause instability.

Restart your PC and enter BIOS/UEFI (usually Del, F2, or F10).
Look for Load Setup Defaults, Optimized Defaults, or Reset to Default.
Save and exit.

This will restore safe hardware parameters.

Step 9: Check Your Power Supply

Unstable or insufficient power can trigger WHEA errors, especially if you’ve recently upgraded your GPU or CPU.

To Test:

If you have a modular PSU, ensure all power cables are properly seated.
Try connecting your PC directly to a wall socket (avoid surge protectors temporarily).
Use hardware monitoring tools to check voltage fluctuations — large dips can indicate PSU problems.

If you suspect your power supply, test with a spare or take your PC to a service center.

Step 10: Run a Hardware Diagnostic

Most OEM PCs include built-in diagnostics.

For Dell, HP, or Lenovo:

Restart your PC and press F12 or Esc to open the boot menu.
Select Diagnostics.
Let the tool check your CPU, RAM, and disk for hardware issues.

For custom PCs, you can use third-party tools like OCCT or AIDA64 to stress test components.

If one component fails, it’s likely the cause of your WHEA error.

Step 11: Perform a Clean Boot

A driver or third-party service may be causing conflicts. Running Windows in a clean boot environment helps isolate the problem.

Press Windows + R, type: msconfig and press Enter.
Go to the Services tab → check Hide all Microsoft services → click Disable all.
Open the Startup tab → click Open Task Manager → disable all startup apps.
Restart your PC.

If the error doesn’t occur after a clean boot, re-enable services one by one to find the culprit.

Step 12: Check for Corrupt or Failing Hardware

If none of the above fixes work, test your hardware individually:

RAM: Try booting with one stick at a time.
GPU: Test in another system or remove and reinsert it.
Storage: Run the manufacturer’s SSD/HDD diagnostic tool.
Motherboard: Inspect for bulging capacitors or physical damage.

Hardware failure is rare but possible — especially in older systems or after power surges.

Step 13: Reset or Reinstall Windows 11

If the error persists even after verifying hardware and drivers, your system files may be beyond repair.

Go to Settings → System → Recovery.
Under Reset this PC, click Reset PC.
Choose Keep my files.
Follow the on-screen steps.

This reinstalls Windows 11 while preserving your personal data.

Wrapping Up

The WHEA_UNCORRECTABLE_ERROR can seem alarming, but in most cases, it’s caused by driver conflicts, overclocking, or corrupted system files — not catastrophic hardware failure.

The fastest and most effective fixes are: