Hi, it's been happening more recently and more frequently, it seems to happen more during intense gaming, it just reboots, it's done it during YouTube or normal operation but not as much. It's almost as if it needs to warm up first before it starts to crash. My question is, at one point during all the trouble shooting I noticed the psu kettle plug was loose, when I moved it it sparked and shut down. I wonder if I loosened it after the crashes during trouble shooting or if it was the cause of them in the first place. Is it likely that a loose ac cable going into the psu could cause fluctuations in power and cause my system to crash? Has anyone else ever experienced this? I've tried one graphics card at a time as I have 2, I've tried one stick of ram at a time in different slots, I've reseated the cpu and reapplied paste, I've checked monitored temps on cpu mb and both gpus and everything seems fine, I've also wiped the hd and did a fresh install with latest drivers for all hardware and BIOS updates. I've not had a crash since I plugged the cable into the back properly but I still need to test it with a bit of intense gaming to be certain the power cable was the problem. It's also plugged into a surge protector, I wonder if that could cause any problems? I have a corsair hx750 psu, which has been fine for a long time and removing one card to reduce demand on the psu was still producing crashes. I've checked the psu with a multi meter and the villages were fine too. The psu barely gets hot as the fan kicks in sometimes when it gets warm which isn't often.