Error codes

0x0000007F

UNEXPECTED_KERNEL_MODE_TRAP

What it means

The CPU hit a fault the kernel did not expect, often from hardware.

Common causes

• Overclock or overheating
• Faulty RAM
• Old drivers

How to fix it

1. Undo any overclock or undervolt, including XMP/EXPO memory profiles, and test at stock settings for a day.
2. Test the RAM: run Windows Memory Diagnostic (search mdsched) or MemTest86 from a USB stick. Any error means a stick or its speed setting is the problem.
3. Update the graphics, chipset and network drivers from the maker's site (NVIDIA, AMD, Intel or your board vendor), not from a driver-updater tool.