When I am playing any game on my PC, eventually it will freeze and the sound will stutter. Some small fraction of the time I can recover by mashing a bunch of keys like escape or tab. Usually, though, I have to do a hard reset. This has only been happening the last couple months since I installed FFXIV. Prior to that it was working fine with all the games I wanted to play (SWTOR, BF4, and others). Nothing gets logged in event viewer about the issue, the MSI control center doesn't do any logging, and SpeedFan basically just doesn't work on my machine. I looked at CPU-Z but it didn't seem like it would help me very much. Windows Memtest utility didn't find anything wrong with my memory. Other recent changes: Windows 10 install.
MB: MSI 970A-G46 CPU: AMD FX-6300 (vishera) MEM: 16GB GPU: EVGA Geforce GTX 750 Ti (2GB) OS: Windows 10 PSU: Antec True Power 650
Prime95 Blend test: after about 20 minutes CPU temp is 66-67C, which seems high.
FurMark: 20 Minutes burn-in test (8x antialiasing, 1080p, fullscreen) got up to 73C max, stayed around 70-72C, usually 98% TDP, 10FPS. Did not do extreme burn-in
Occasionally it also sounds like a fan in my computer starts and stops without any particular reason. There will be a clicking sound, then some whirring as it powers down. Looking into the box, I can't really see any fans slowing down or stopping - looks like CPU, GPU and case fans all remain at constant speeds. It's harder to see the fan in the PSU but the sound seems like it's coming from there.