Hi guys, im new in the forum, don't know if I can start threading right away but here goes. My setup: 2500k @ stock, ASROCK Z77 pro 3, 2x2gb of gskill ripjaw, HX650, WD Black 500gb+SG 320gb, 6870 Shappire. My problem started quite a while ago with another motherboard, one day I started my PC and it just wouldn't boot, it ran for about 1-3sec and then it would shut off, infinite loop... So at the time I just swapped my HX psu for a temporary 220w one and it was all ok apart from having to take the gpu out since this psu wouldn't handle it. Then that motherboard burned and I swapped it for a brand new one (z77 pro 3). At the same time as I got the new board I went to a electronic repair shop with my HX psu since I was sure it was broke. And a week later they call me to go get it back and the guy tells me shes in perfect condition, which was very awkward since ive been messing around with computers for years and I usually dont make this sorta stupid mistake. I thought, well maybe it was the previous board (Even if she did work with the 220w PSU, it didnt really make any sense but I thought wtv lets give it a try anyway). Got home got it running and voila, works perfectly... For TWO days. After those two days with a new board and the rest of the same components the PC went back to the same simptoms, it would power on and off for seconds and loop and loop... Again I switched to the old 220w psu and it works perfectly. Went back to the store, they tested it and swap some internal components just to keep it safe and deliver it to me, saying it ran for days without a hiccup, with 2 HDDs and a bunch of different OS's (If that even mattered). So I got back home tested it and hurray, its finally over its running perfectly and im playing a bunch of games without any problems. But, its been two days... Wont boot, LOOP LOOP! Same old story, HX wont work and im back to the 220w psu... Any ideas? Im out of options, this makes 0 sense! Thanks in advance!