So I am having a problem with my computer when I play some of my games after a short time the screen goes black and I can hear the sound looping... My guess is after doing some research brings it down to one of two things 1) Graphics card is over heating or 2) My power supply is not good enough for my computer. I think it is 2 cause I downloaded CPUID HWMonitor and it is running between 35C and 45C depending on the game. I did update all of my drives. Also tried using eXtreme Power Supply Calculator Lite (I would post a link but I do not have over 5 posts >.<) to check the wattage I would need and it says 730W but I am not 100% sure I am doing it right. If I am missing anything please let me know and I will fill in any gaps. So in the end I am looking for some opinion/help. My specs for my computer are:: GIGABYTE GA-Z68A-D3H-B3 LGA 1155 Intel Z68 Intel Core i5 2500k Sandy Bridge 16GB ram (4 x 4GB) GTX 560 Ti 630W Power supply Running Windows 7 64 bit Antec Lanboy air Blue Black / Blue ATX Mid Tower Computer Modular Case Thank you for any help on this matter!