My computer has been crashing repeatedly, and I'm trying to determine whether the problem is faulty RAM, damaged motherboard slots, or unstable power from the PSU. During a crash, the screen freezes and the same fraction of audio loops loudly through my headphones. I've only seen a blue screen a few times, usually with the IRQL_NOT_LESS_OR_EQUAL stop code. Windows Memory Diagnostic reports no problems, but three MemTest86 runs produced inconsistent results: one crashed after about five minutes with 33 errors, another ran for roughly an hour with no errors, and a third ran for about an hour with two errors. I've also completely reinstalled my graphics drivers, but that didn't help. What should I test next to identify the failing component?
1 Answer
The blue-screen photos and memory-test results would be useful, especially the exact error details. If you can access them, crash dump files from the Windows Minidump folder would provide more information about what triggered the failures. Inconsistent MemTest86 errors are worth taking seriously, but you’ll need to test the RAM sticks and motherboard slots individually to narrow down which part is failing.

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