About two weeks ago I built a custom computer for my self, the motherboard is an Asia p5n-d I put an intel e7300 and 4 gb of ddr2 ocv ram, an ocv 600 watt psu and an nvidia gtx 260. I installed the windows 7 beta and it ran beautifully for about a week, when my pogrsms started crashing. Then It would bsod alot. I decided to reinstall windows. So after booting to disc and running the install I can only extract the files to 10% before I get an error, I know the disc is fine since I have used it on other computers since, I've checked my disc drives and there is no problem, I even swapped out with a brand new motherboard after returning the first one, I also bought a new hd, could this be a ram issue, also note that after removing one stick of ram, I can get to 100% and through the first restart only for the system to go into what I can only describe as standby mode, but will never turn back on, I'm very frustrated with this please someone help!