Well, about 4 month ago I built a new gaming rig. Cpu is 4670k mobo is GIGABYTE Z87X-UD4H GPU: GTX 770 and 8GB of Corsair Vengeance 1600Mhz. The rig doesnt crashes all the time but especially sometimes while playing game. The type of is like PC froze for 3 sec, then makes weird noise like brrrrrr. The windows crashes and automatically reboots.