Hey guys, I just purchased an ATI Radeon HD 5750 and it is working fine. However, the problem is during startup. On startup the computer clicks twice in a row quick then a one second pause, it repeats this about 4 times then all of a sudden the computer boots up fine. It sounds like its coming from the hard drive but this hard drive is not even two months old. I have an Athlon X2 5600+ 2.8ghz, 4gb xms2 ddr2 pc6400 (1gbx4), 160gb sata2 Seagate, Radeon HD 5750, Gigabyte GA-M57SLI-S4 and a sort of old rocketfish 700watt power supply. Thanks for the help guys!