I recently put together a new system after selling my old AMD system. In it is an ASRock Z77 Pro3 mother board, and Intel i5-2500k, 750w xfx xxx full modular PSU, 8gb corsair vengeance ram 2x2 1600 mhz, 500gb western digital caviar blue drive, and a GTX 570. At first I was a getting some blue screens, and was able to solve the issue by tweaking some settings in BIOS and nVidia control panel, power settings, etc. It seemed that I had it all solved and squared away, but now I am getting randomly occuring freeze ups. Just completely locks up the system, cant do anything, wont reboot itself, frozen screen, no looping sound like a blue screen. Just completely freezes. I was wondering if anyone has any insight in to what this may be, and if someone could walk me through fixing it if they do happen to know what is causing it. At first it seemed to happen jsut during games, but I realized that it happens pretty randomly, as it just happened recently during web browsing. Please help. Is it a ram issue? Or maybe it is a compatibility issue with the 2500k and mother board (z77) or mother board and ram/video card or a combination of anything. I have tried a bunch of things and nothing seems to work. Please help!