I know its a more complicated question and it can be any number of things but from experience with PCs over the last 15 or so years there are usually certain signs that can sometimes point to a hardware problem.
So for my specific problem, my computer has done a hard freeze three times so far, over a span of 4 weeks though so it s not really common. Both times I was playing a game, and by hard freeze I mean the screen freezes, audio stops, and no keyboard or mouse responds (like no lights turn on or off), so a reboot is required. From my experience this sounds like it could be a MB or CPU issue as video card or other component issues usually crash and I get a bluescreen or maybe a reboot. The last time Ive had a hard freeze was 6 years ago and it was a faulty CPU when I newly built my PC.
So my question to you guys is what hardware part could be capable of producing a hard freeze like mine? Some sites suggest memory (ran memtest86 but it "finished" at 2 passes, so will run another one later) but all memory problems I have experienced resulted in a bluescreen or crash, not a hard freeze. A PSU problem I would assume is also a crash but I only dealt with a blowout and shutdowns. Video card problems seem to crash or possibly freeze too, but not a hard freeze from what I personally have seen, could be wrong though. Also can a hard drive cause a hard freeze?
Also I have monitored temps and although the GPU could be lower, it is only reaching like 70-75, with my CPU stable around 38/39 (yay liquid cool!)
Win 10 Pro 64 -
Nvidia gtx 960 -
16 GB RAM -
AMD 8150 CPU -
ASUS sabertooth fx MB -
750W PSU -