SYSTEM_SERVICE_EXCEPTION (0x3B)
What is this error?
An exception happened while executing a routine that transitions from non-privileged to privileged code.
Common causes
- antivirus software
- GPU driver bug
- Windows Update bug
- corrupted system files
How to fix it
- Update all drivers
- temporarily disable antivirus
- run sfc /scannow
- check for Windows updates
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
Bug check 0x0000003B (SYSTEM_SERVICE_EXCEPTION) occurs during the transition from user-mode to kernel-mode code. The first parameter is the exception code (most commonly 0xC0000005 = access violation). Very often caused by antivirus software (especially Norton, McAfee, AVG kernel components), GPU driver bugs, or corrupted system files. The minidump will show the faulting module — if it's an antivirus .sys file, that's your answer. Fixes:
- Check the minidump for the faulting driver/module name,
- If antivirus-related, temporarily uninstall the antivirus (not just disable — uninstall),
- Update GPU drivers via DDU clean install,
- Run 'sfc /scannow' and 'DISM /Online /Cleanup-Image /RestoreHealth',
- Check for pending Windows updates,
- If the faulting module is win32kfull.sys or ntoskrnl.exe, this is often a Windows bug — check if a recent Windows update is the cause.
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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