Firstly, I apologise if this is in the wrong section, if so, would an admin kindly move it. PC Specs: P5n32-E SLI Plus Motherboard 2 x 2GB DDR2 RAM 2 x 512MB Nvidia Geforce GFX 750GB Internal HDD (Changed from the originally given 250GB, due to suspicions this was causing my PC issues.) Okay so I just got myself a nice shiny new computer. And alas, the problems already started. I have Windows 7 64-Bit on a disc, and the original OS this PC came with was Vista 32. Immediately after turning it on the problems started. As soon as Vista got past the loading screen, a blue screen of death would pop up, and it would restart, and loop. So I popped in the Windows 7 64-Bit disc, chose for the PC to boot from the disc as it's primary boot device, and hey presto, it worked, it began to install. After this, it decided to restart, but immediately more issues arose. For some reason, the graphics seemed broken on the start up display. Windows 7 then proceeded to 'finalize installation' in which it decided it would throw up another blue screen displaying values like 'nvlddmkm.sys PAGE_FAULT_IN_NONPAGED_AREA'. So here I am, thinking I've been duped by the person who sold me this computer that was built by himself, firstly due to the blue screen on Vista originally, and secondly due to the inability at all to load Windows 7 either, and popping up new blue screens. So if you can help, please do give me some information on what I can do. Note: It's not a hard disk error, as I had this problem with the original 250GB disk, then decided to hook up my previously external 750GB, which worked, installed, but performed the same blue screen at the same point that the 250 did. Thank you!