Blue screen: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (0x0000007E)
A system thread hit an exception — caused by an incompatible or corrupted driver, typically graphics or network.
Exact message you may see
Stop code: SYSTEM THREAD EXCEPTION NOT HANDLED
Seen on:
Windows
Meaning
Often appears right after a Windows update or upgrade with an old driver. If it loops at boot, use Safe Mode to roll back the driver.
Common causes
- Incompatible driver after upgrade
- Corrupt driver files
- Faulty hardware
⚡ Quick fix
- Safe Mode → roll back/uninstall the named driver
- Install the manufacturer’s latest driver
- sfc /scannow
Detailed fix by platform
Windows
- powershell
# Advanced startup → Troubleshoot → Startup Settings → Safe Mode pnputil /enum-drivers > drivers.txt
How to diagnose
- Driver — What failed
- Timing — After an update?
🔧 Still not fixed?
Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:
Similar errors
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Where this error sits
Origin: Platform & cloud. Errors that are often confused with or caused by this one (click to open):
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Last updated 14 Oct 2026