Cold conditions tested stability, memory checks succeeded, but performance dropped under stress.
Cold conditions tested stability, memory checks succeeded, but performance dropped under stress.
I installed a new PC two days ago and have faced repeated hard crashes under stress (cinebench and aida64 run for about 15 seconds before crashing, can’t open 3DMark without freezing). The BIOS is up to date, all drivers are current, temperatures stay low before the crash (around 68°C at full CPU load), MemTest86 completed successfully with no issues, disk checks passed cleanly, memory and system checks passed without errors, everything appears default. Resetting the BIOS CMOS helped, Windows was updated to the latest release, and I’m not sure what to check in the event log but don’t see obvious warnings. Any suggestions would be greatly appreciated. Here’s the setup: a Core i7-12700KF 3.6GHz 12-core processor for $267, an ARCTIC Liquid Cooler for $127, MSI PRO Z690-A motherboard for $184, TEAMGROUP DDR5 memory for $85, a 2TB SSD for $67, a Western Digital M.2 drive for $50, a RX 6900 XT graphics card for $578, and a Corsair case for $103. The power supply is EVGA SuperNOVA 850 G6 at 850W.
The hard crash appears as an immediate shutdown, a blue screen of death, or freezing with no response.
the display switches instantly to black and then stops right after the system shuts down. it happens quickly—usually within a couple of seconds—and after that, it restarts normally. i can turn it back on in about five seconds. no error alerts or blue screens appear.
The image shows the event viewer. Could it be the PSU? Is there a method to remove other choices before replacing the PSU?
It might be the power supply problem, as I've experienced similar issues even with brand new PSUs. Another possibility is a faulty wall plug or defective cable causing voltage irregularities. CPU overheating could also be the cause—possibly due to inadequate cooling, so try re-seating the CPU and cooler with fresh thermal paste. Don't forget to check the GPU temperatures as well.