Hey guys, frequently come here for answers but now I need one of my own! I've just completed my first build, (i5 3570k, asus p8z77-v pro, 8gb 1600 vengeance, gigabyte gtx 670, Antec HCP 750) and have been having, what I assume to be, problems with my gfx card. Whenever I try and play a game and sometimes when i run benchmarks (furmark, cinebench, unigine) my computer reboots. At first I was not using a surge protected socket and upon restart, the bios would say that asus anti-surge turned it off. Now I have it connected to a surge protected socket and it still does this. I've connected a different graphics card (HD 5450) and it has worked fine. On top of that I ran fur cube in GPU caps and there was no problem. GPU temps were unable to go above 70C at 100% GPU load and 100% TDP. Originally I had a single power cable connected to both the 8 pin and 6 pin connectors but have since changed it to two separate cables and the problem is still there. Everyday computing is normal and CPU benchmarks have no effect. My conclusion is a problem with the gfx card. I would love some help guys, I can't even run minecraft D: !!!!
Thanks so much in advance.
Edit: Just a bit more info on the nature of the reboot: the PSU makes a clicking noise and all power is cut. The case fan LEDs cut off for a second then it reboots. Occasionally it goes to the Asus anti-surge screen. I tried turning asus anti-surge off as i heard it was rubbish but the problem continued. It does go to the safe mode selection page. Thanks guys, major noob here (much more apparent to me now!)