Hey guys, So when trying to see what Scum is all about i experienced a instant PC restart. So like anyone you think weird? Instability? Okay try knocking down overclocks etc. And it still did it. So i put my CPU to complete stock and took off the overclocks on the ram etc. And tried firing up something else to eliminate Scum being the problem so i tried 3d mark and fired up extreme and got a instant pc restart. So i started thinking crap it's the GPU. So i've took off all overclocks on that and it still did it. So ive tried furmark (yea i know bad) to put it under load and it does it with this too. However i'm not sure if its the GPU or the PSU because the GPU has shown no instability in games, no artifacts nothing. But the only problem is my PC restarts when it appears to be the GPU under full load. For example dota2 isn't a GPU extensive game and i seem to get through games on that no problem but a demanding game and it restarts. My Psu fan doesn't spin up or anything though just spins at a very low RPM (which suggests it's not even near full load right?) Anyway all the hardware ; 8700k @5Ghz 1080ti Seasonic G750 watt. Not sure how long ive had the PSU now but i'm going to assume it's over 5 years now. edit - Already ruled out the CPU. I did stress tests with Aida64 and no issues even when reapplying my overclocks on the CPU. I can use my PC with no problems as normal but firing up something which is demanding on the GPU gets the restarts.