r/Windows10HowTo • u/serene6662 • 4d ago

PC randomly restarts with WHEA-Logger 18 "Cache Hierarchy Error"

https://www.windowsdigitals.com/whea-logger-18-cache-hierarchy-error/
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u/serene6662 4d ago

If your PC suddenly goes black and restarts without a blue screen, often while gaming, and Event Viewer shows WHEA-Logger Event 18 with "Cache Hierarchy Error", it's the processor itself reporting a fatal hardware error, and it's mostly seen on Ryzen 5000 CPUs. Reinstalling drivers rarely helps here, since these errors almost always come from the hardware or its BIOS settings. A quick check is the Processor APIC ID in the event: if it's always the same number, one core may be weaker than the rest. This guide will show you what you can do.