Windows & BSOD · critical

How to fix0x0000007E

SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

What this error means

0x0000007E shows up as a critical-severity Windows operating system fault. A system thread threw an unhandled exception. A very common Windows BSOD caused by drivers. It sometimes comes down to RAM errors. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Run SFC

Run SFC.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Boot into Safe Mode

Boot into Safe Mode.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Uninstall recent drivers

Uninstall recent drivers.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Corrupt driver
  • Corrupted system files
  • RAM errors