About a month ago my one year old PC started to to reboot with no error displayed under load as if it was overheating. I made sure it was not overheating and updated the drivers but the problem kept getting worse. Now I can barely even get to BIOS let alone Windows.
I have reduced the entire PC to just the PSU, motherboard, CPU and one stick of RAM. Nothing is connected besides these and a CPU fan, not even front I/O, but the problem persists. At most it can idle in BIOS for 20 minutes or I manage to get into windows for about 3 minutes, then it turns off and gets stuck in a reboot loop.
These being:
Gigabyte Z170-HD3P
i5-6600k (with Cooler Master hyper 212x)
HyperX Savage 4GB 2133Hz
EVGA Supernova 550 G2
I have tried many things including:
-scanning for malware and removing it
-Windows recovery
-Check Disk shows no error
-Windows Memory Diagnostic shows no error
-sfc scannow shows no error
-updating BIOS (problem persisted on both the previous F4 and the newest F22g version)
-clearing the CMOS
-reseating everything including CPU and its cooler
-tried both RAM sticks in every slot individually
-cooling the southbridge as I noticed it gets much hotter than anything else while idling in BIOS
-visually checked every component and cable but did not find any issue
-checked components for overheating while running
-tested the PSU, power cord and the outlet with a multimeter (good results)
-tried different power outlets
I dont know what to do anymore. No suspicious noises or smells. I have never overclocked anything. Voltages for RAM and CPU are correct. Temps sit at 27-30 degree Celsius. The last thing I can think of is getting an internal PC speaker to reveal the culprit, but so far I have difficulties even finding any for sale that ship to my country. Any ideas? Thank you.
