Hi, this is my first post with AD. I seem to be having some serious issues with my computer and so far I am unable to find someone who can help me solve my problem. So I have joined AD hoping that someone here will have more knowledge than myself and my friends. I just bought a computer E6600, 2gb OCZ DDR2 800, dual 250gb Western Digital HD's, ASUS P5N32-SLI Premium, eVGA 8800 GTX, Lite On DVD-RW, Antec 900, Vista Ultimate It locks up and gives me a blue screen with a bunch of gibberish on a daily basis, usually 2-3 times a day. I have updated all my drivers and my bios for my MOBO, no luck. After that I started to believe that maybe it was Vista cause I've been hearing that alot of people are having issues with the 8800's and Vista, so I wiped my HD and installed XP, still no luck. I then swapped out my 8800 for ATI's X1800, still no luck. I then tried different ram, no luck. I have been searching google for a solution all day and night, I'm talking 10+ hours of trial and error and I have not come any closer to a solution. I'm about to go buy a new MOBO cause I really can't think of what else it could be. Long story short, I just spend 2k on a computer that doesn't work properly. And I can't exactly return it cause I bought it off craigslist and the guys phone is now disconnected, so it's not like I can return it or RMA it or get any kind of reimbursement. So to say the least, I'm really bummed. I can't watch a movie cause I get the blue screen when I watch a movie. I can't play a game cause it locks up on me. I get about 10 minutes of oblivon time before it locks up and I'm forced to reset. Thats why I thought it might be my 8800 but the same thing happens with the X1800. So as of right now I have hit a dead end, I have done everything that I know how to do. I'm about to bring it to the geek squad but I am hesitant cause it's gonna cost me like $500 to bring it to them and that doesn't guarantee me they will fix the problem, I might be throwing good money after bad. So you guys here at AD are my last hope. If you are reading this and you happen to be knowledgeable with computers I beg you to help me. If you know of something that I could try please do let me know. I know alittle bit about computers but I am not a expert, maybe you know of some type of diagnostic tools that I could try. I would appreciate all who try to help solve my problem but I am willing to paypal $50 to the person who actually solves the problem. I have a feeling I have a good fight on my hands and the $50 is just my way of showing that I really do appreciate all the time and effort that is shown to me. My name is Mark and I thank you for taking the time to read my post and help me.