Windows 11 BSOD Error Codes: Complete Fix Guide (2026)

Windows 11 bsod error codes are among the most frustrating problems users face on Windows 11. A sudden Blue Screen of Death (BSOD) can interrupt your work, cause data loss, and sometimes indicate serious hardware or software issues. When your PC blue screens, it displays a stop code — that code is your starting point for figuring out what went wrong. Understanding windows 11 bsod error codes is the first step toward fixing the problem. According to Microsoft Support, when Windows encounters a condition that compromises safe system operation, the system halts to protect your data and hardware. The windows 11 bsod error codes you see tell you exactly what went wrong. This comprehensive guide covers the most common windows 11 bsod error codes, what they mean, and proven fixes for each one. Whether you are seeing CRITICAL_PROCESS_DIED, IRQL_NOT_LESS_OR_EQUAL, or any other windows 11 bsod error code, this guide has the solution.

If you are experiencing frequent crashes, the windows 11 bsod error codes provide the most direct path to resolution. Each windows 11 bsod error code points to a specific category of problem — drivers, memory, system files, or hardware. By identifying the exact windows 11 bsod error code, you can apply the right fix without wasting time on unrelated troubleshooting. This guide is designed to help you decode every windows 11 bsod error code you might encounter.

1. What Is a BSOD

A Blue Screen of Death occurs when Windows encounters a critical system problem that forces the operating system to stop to prevent damage. It’s a protective mechanism, not a punishment — Windows decides it’s safer to stop everything than to risk corrupting your files or hardware. In 2026, BSODs are still fairly common, partly because Windows 11 updates have been aggressive and not always stable. When your PC blue screens, it shows a stop code. That windows 11 bsod error code is your starting point for figuring out what went wrong. The windows 11 bsod error codes you see are documented in Microsoft’s Bug Check Code Reference. The most common causes of windows 11 bsod error codes include outdated drivers, corrupted Windows files, faulty RAM, overheating, SSD or HDD problems, malware infections, hardware incompatibility, and failed Windows updates. Understanding the specific windows 11 bsod error code helps you apply the right fix.

2. CRITICAL_PROCESS_DIED (0x000000EF)

CRITICAL_PROCESS_DIED is one of the most frequently seen windows 11 bsod error codes right now, especially after Windows 11 updates. According to Microsoft Learn, this windows 11 bsod error code means a core Windows process that the system absolutely needs to run suddenly stopped working. Think of it like your car engine dying while you are driving. The most common causes of this windows 11 bsod error code are corrupted system files, a bad Windows update, or a third-party application that interfered with a core process. This windows 11 bsod error code often appears after recent updates or software installations.

Fix for this windows 11 bsod error code:

1. Boot into Safe Mode (interrupt boot 3 times → Recovery Environment → Troubleshoot → Advanced options → Startup Settings → Restart → Press 4 or F4)
2. Open Command Prompt as Administrator
3. Run: sfc /scannow
4. If SFC finds issues it can't fix, run: DISM /Online /Cleanup-Image /RestoreHealth
5. Then run sfc /scannow again
6. Check if a recent update installed right before the crashes started — roll it back if needed
7. Uninstall any recently added third-party software

According to Microsoft’s advanced troubleshooting guide, this windows 11 bsod error code often requires system file repair. If the windows 11 bsod error code persists after these steps, consider performing a Windows 11 Repair Install.

Outcome: Repairing system files and rolling back problematic updates resolves this windows 11 bsod error code.

3. IRQL_NOT_LESS_OR_EQUAL (0x0000000A)

IRQL_NOT_LESS_OR_EQUAL is the most common windows 11 bsod error code — it accounts for roughly a quarter of all BSOD tickets. According to Microsoft Learn, a driver accessed memory using an incorrect privilege level. This windows 11 bsod error code happens when a kernel-mode driver or system process tries to access a memory address it doesn’t have permission to reach. This windows 11 bsod error code almost always points to a faulty, outdated, or newly installed driver. Graphics drivers, network adapter drivers, and audio drivers are common culprits for this windows 11 bsod error code.

Fix for this windows 11 bsod error code:

1. Boot into Safe Mode
2. Open Device Manager (right-click Start → Device Manager)
3. Look for devices with yellow exclamation marks — these have driver issues
4. Right-click the device → Update driver → Search automatically
5. Pay special attention to graphics drivers, network adapters, and storage controllers
6. If the BSOD started after a recent driver update, roll it back: Properties → Driver tab → Roll Back Driver
7. Run: sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth
8. Test your RAM using Windows Memory Diagnostic (search "mdsched" in Start)

The windows 11 bsod error code may name the specific driver file causing the issue — look for something ending in .sys. This is a valuable clue for this windows 11 bsod error code.

Outcome: Updating or rolling back drivers resolves this windows 11 bsod error code.

4. PAGE_FAULT_IN_NONPAGED_AREA (0x00000050)

PAGE_FAULT_IN_NONPAGED_AREA is a common windows 11 bsod error code that means Windows tried to access memory that doesn’t exist or isn’t available. According to Microsoft Learn, the system attempted to access a paged memory area that couldn’t be found. This windows 11 bsod error code is often related to RAM problems, but it can also be caused by a faulty or outdated driver, or antivirus software interfering with system memory. This windows 11 bsod error code can be tricky to diagnose because it has multiple potential causes.

Fix for this windows 11 bsod error code:

1. Run Windows Memory Diagnostic: Press Windows + R → Type "mdsched.exe" → Enter → Restart now and check for problems
2. If RAM is faulty, reseat it or replace the faulty stick — try removing one stick at a time to identify the failing one
3. Temporarily disable your antivirus and check if BSODs stop
4. Update or roll back recently installed drivers
5. Check for driver updates first, especially for your graphics card and storage controller
6. Run: sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth

This windows 11 bsod error code often resolves after RAM testing and driver updates.

Outcome: Testing RAM and updating drivers resolves this windows 11 bsod error code.

5. SYSTEM_SERVICE_EXCEPTION (0x0000003B)

SYSTEM_SERVICE_EXCEPTION is a windows 11 bsod error code caused by a system thread error. It’s typically caused by a buggy driver or corrupted system file. According to a Microsoft Q&A discussion, this windows 11 bsod error code is very common and usually the exception address pinpoints the driver or function that caused the problem. This windows 11 bsod error code can appear after driver updates or system changes.

Fix for this windows 11 bsod error code:

1. Boot into Safe Mode
2. Open Device Manager and update all drivers, especially graphics, network, and chipset drivers
3. If the BSOD started after a recent update, uninstall the problematic update: Settings → Windows Update → Update History → Uninstall updates
4. Run: sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth
5. Run Windows Memory Diagnostic to check for RAM issues
6. Check for Windows updates: Settings → Windows Update → Check for updates

This windows 11 bsod error code often resolves after comprehensive driver updates.

Outcome: Updating drivers and system files resolves this windows 11 bsod error code.

6. MEMORY_MANAGEMENT (0x0000001A)

MEMORY_MANAGEMENT is a windows 11 bsod error code that points directly at your RAM. Either your memory modules have a hardware fault, Windows is having trouble managing how memory is being used, or a program is doing something it shouldn’t with memory allocation. This windows 11 bsod error code is one of the most hardware-specific stop codes you can encounter.

Fix for this windows 11 bsod error code:

1. Run Windows Memory Diagnostic: Search "Windows Memory Diagnostic" in Start → Restart now and check for problems
2. Let it run overnight and check the results when your PC restarts
3. If errors show up, your RAM stick may be failing
4. Try removing one stick at a time if you have multiple installed and see if the crashes stop
5. Update all device drivers
6. Run: sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth

This windows 11 bsod error code often requires physical RAM testing and replacement.

Outcome: Testing and replacing faulty RAM resolves this windows 11 bsod error code.

7. KMODE_EXCEPTION_NOT_HANDLED (0x0000001E)

KMODE_EXCEPTION_NOT_HANDLED is a windows 11 bsod error code where Windows kernel code encountered an error it couldn’t handle. This windows 11 bsod error code is often caused by bad drivers, incompatible software, or corrupted system files. The windows 11 bsod error code often names the faulty file in the BSOD screen.

Fix for this windows 11 bsod error code:

1. Note the filename shown on the blue screen — search it to find the responsible driver
2. Update or uninstall the driver linked to the named file
3. Run: sfc /scannow
4. Disable overclocking in BIOS/UEFI if your CPU or RAM is overclocked
5. Use Driver Verifier to identify problem drivers: search "verifier" in Start
6. If all else fails, perform a Windows 11 Repair Install

For more detailed instructions on using Driver Verifier to diagnose this windows 11 bsod error code, see our How to Use Driver Verifier guide.

Outcome: Identifying and removing the faulty driver resolves this windows 11 bsod error code.

8. DPC_WATCHDOG_VIOLATION (0x00000133)

DPC_WATCHDOG_VIOLATION is a windows 11 bsod error code that usually indicates a storage driver issue, commonly with SSD firmware problems. According to a 2026 guide, anything naming a .sys file usually means a driver is misbehaving — commonly graphics, storage, or a freshly updated one. This windows 11 bsod error code can also appear after system updates.

Fix for this windows 11 bsod error code:

1. Update your storage controller drivers
2. Check for SSD firmware updates from your drive manufacturer
3. Run Check Disk: chkdsk C: /f /r /x (restart required)
4. Update your BIOS/UEFI firmware
5. Run: sfc /scannow
6. If you have overclocking enabled, disable it temporarily

This windows 11 bsod error code often resolves after storage driver updates.

Outcome: Updating storage drivers and firmware resolves this windows 11 bsod error code.

9. NTFS_FILE_SYSTEM (0x00000024)

NTFS_FILE_SYSTEM is a windows 11 bsod error code that indicates a problem occurred with the NTFS file system on your hard drive. This windows 11 bsod error code usually means your hard drive is failing, has corrupted sectors, or there’s file system damage. According to a 2026 guide, act quickly — data may be at risk when you see this windows 11 bsod error code.

Fix for this windows 11 bsod error code:

1. Run Check Disk: chkdsk C: /f /r /x (restart required)
2. Check SMART health of your drive using CrystalDiskInfo (free tool)
3. Update your storage controller drivers
4. If the drive shows errors, back up data immediately and consider replacing the drive
5. Run: sfc /scannow after disk check completes

This windows 11 bsod error code requires immediate attention to prevent data loss.

Outcome: Repairing the file system and checking drive health resolves this windows 11 bsod error code.

10. DRIVER_POWER_STATE_FAILURE (0x0000009F)

DRIVER_POWER_STATE_FAILURE is a windows 11 bsod error code that occurs when a driver is not handling power state transitions properly. According to Microsoft Q&A, this windows 11 bsod error code is often caused by recently added device drivers or system services. This windows 11 bsod error code commonly appears after waking from sleep or hibernation.

Fix for this windows 11 bsod error code:

1. Remove or update recently added device drivers or system services
2. Open Device Manager and update drivers, especially chipset and audio drivers
3. Disable power saving for network adapters: Device Manager → Network adapters → Right-click → Properties → Power Management → Uncheck "Allow computer to turn off this device"
4. Run: sfc /scannow
5. Check for Windows updates

This windows 11 bsod error code often resolves after power management adjustments.

Outcome: Updating drivers and adjusting power settings resolves this windows 11 bsod error code.

11. WHEA_UNCORRECTABLE_ERROR (0x00000124)

WHEA_UNCORRECTABLE_ERROR is a windows 11 bsod error code that indicates a fatal hardware error has occurred. According to Microsoft Q&A, Parameter 1 identifies the type of error. This windows 11 bsod error code is a serious error that usually points to hardware failure. This windows 11 bsod error code requires thorough hardware diagnostics.

Fix for this windows 11 bsod error code:

1. Check for overheating: monitor your CPU and GPU temperatures
2. Reset BIOS/UEFI to default settings
3. Disable overclocking (CPU, RAM, or GPU)
4. Run hardware diagnostics from your PC manufacturer
5. Test your RAM with Windows Memory Diagnostic
6. Check your storage drive health with CrystalDiskInfo
7. If the windows 11 bsod error code persists, a hardware component (CPU, motherboard, or power supply) may be failing

This windows 11 bsod error code often requires professional hardware diagnosis.

Outcome: Identifying and replacing faulty hardware resolves this windows 11 bsod error code.

12. Frequently Asked Questions

What are the most common Windows 11 BSOD error codes?

The most common windows 11 bsod error codes include CRITICAL_PROCESS_DIED, IRQL_NOT_LESS_OR_EQUAL, PAGE_FAULT_IN_NONPAGED_AREA, SYSTEM_SERVICE_EXCEPTION, MEMORY_MANAGEMENT, and KMODE_EXCEPTION_NOT_HANDLED. Understanding these windows 11 bsod error codes is essential for effective troubleshooting.

How do I fix a BSOD on Windows 11?

Start by noting the stop code, restarting your PC, and booting into Safe Mode. Then update drivers, run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth, test your RAM with Windows Memory Diagnostic, and check for Windows updates. The specific windows 11 bsod error code will guide your next steps.

What does CRITICAL_PROCESS_DIED mean?

This windows 11 bsod error code means a critical system process stopped working. It’s often caused by corrupted system files, a bad Windows update, or third-party software interference. This windows 11 bsod error code requires system file repair.

What does IRQL_NOT_LESS_OR_EQUAL mean?

This windows 11 bsod error code means a driver accessed memory with incorrect permission levels. It almost always points to a faulty, outdated, or newly installed driver. This windows 11 bsod error code is the most common BSOD stop code.

How do I check if my RAM is causing BSOD?

Run Windows Memory Diagnostic: press Windows + R, type mdsched.exe, press Enter, and select “Restart now and check for problems”. This will help identify if RAM is causing the windows 11 bsod error code.

What should I do if I can’t boot into Windows due to BSOD?

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. Then you can troubleshoot the windows 11 bsod error code.

Can outdated drivers cause BSOD?

Yes, faulty drivers are the number one cause of BSODs. Graphics drivers, network adapters, and storage controllers are the most common culprits for windows 11 bsod error codes.

What is the difference between SFC and DISM?

SFC (sfc /scannow) scans and repairs corrupted system files. DISM (DISM /Online /Cleanup-Image /RestoreHealth) repairs the underlying Windows image that SFC relies on. Both are essential for fixing windows 11 bsod error codes caused by system corruption.

How do I find the faulty driver causing BSOD?

Use Driver Verifier (search “verifier” in Start) to force the system to show the driver causing the problem. For detailed instructions, see our How to Use Driver Verifier guide. This is particularly useful for diagnosing windows 11 bsod error codes.

What should I do if none of these methods work?

If BSODs persist, consider performing a Windows 11 Repair Install or contacting a professional technician. You can also check Microsoft’s advanced troubleshooting guide for more in-depth diagnostics on specific windows 11 bsod error codes.

13. Conclusion

Windows 11 bsod error codes can be intimidating, but they are designed to tell you exactly what went wrong. According to a 2026 guide, once you know how to read them, fixing the problem becomes a lot less scary. From CRITICAL_PROCESS_DIED to IRQL_NOT_LESS_OR_EQUAL, this guide covers the most common windows 11 bsod error codes and proven fixes for each one. For more Windows troubleshooting, explore our Windows 11 Troubleshooting Hub and guides on how to use Driver Verifier, how to check RAM health, and how to update graphics drivers. With the right approach, you can overcome any windows 11 bsod error code and keep your system stable. The key is to use the windows 11 bsod error code as a diagnostic tool rather than a source of panic.

For more Windows troubleshooting, explore our Windows 11 Troubleshooting Hub and guides on Windows 11 won’t shut down, slow performance, and how to use DISM. With the right approach, you can resolve any windows 11 bsod error code issue and keep your system running optimally.