I ran FurMark again with HWMonitor on, and got the following results (posted below as a screenshot).

I exited FurMark as I was about to hit the predicted peak of 80 C, just cause I didn't want to...

Hey Phil -- I caved and ordered a PSU, the same one I have now. After swapping it out, I was able to run FurMark consecutively without any issues, which I was not able to do with the old PSU.

If I...

No, I haven't over clocked my GPA myself at all.

So I've booted into clean boot, and am still exhibiting similar behavior. I may be able to run FurMark once, perhaps even twice, but then booting it up another time will trigger a reboot. After the...

So I noticed a motherboard cable was slightly loose. I readjusted it, ran FurMark fine for about 35 minutes (max GPU temperature of 80 C). Stopped FurMark, and tried another run -- my computer...

Hey Phil, thanks for getting back to me. I'll try the clean boot troubleshooting method now and post back to this thread with any more findings I get.

To address your other points:

I've...

For roughly the last two months, I've been experiencing reboots when playing Overwatch, or sometimes when playing other games (e.g., Metal Gear Solid: TPP, The Witcher 3). Sometimes, these reboots...