I have recently begun testing a new build system more extensively, due to ongoing research into finding best settings for a motherboard BIOS.
I have encountered a situation where I had the system running stable with AIDAx64 extreme stress test, then installed Intel XTU which has the ability to adjust motherboard settings and after doing this AIDA began throwing up flags for hardware errors during testing which caused it to stop the tests, sometimes after an hour sometimes after ten minutes. These settings had passed 8 hours of memtest 86+ but I rolled it back anyway to default plus XMP and