Hi, this is my first post on a technical forum, so forgive me for any ignorance that I'm sure I have regarding this. I've recently began building my first custom-built computer, I began with an old Compaq Presario that a friend gave me, and I've pretty much gutted it and replaced all its components. The components I've replaced have included the motherboard, processor, hard drive, RAM and PSU (I'll include the specefics of my set-up below). I've been trying to install Windows 7 but have been getting the blue screen (BSOD) before the installation could complete. The BSOD said "PFN_LIST_CORRUPT" towards the top of the screen. I'm fairly sure that I've installed all the new hardware correctly, but I figured I would try posting a thread here if anyone could offer any suggestions. Your help would be much appreciated! This thing doesn't seem to want to let me separate paragraphs..... The following is the new hardware I've installed: Processor - AMD Phenom II (3.2 GHz), Motherboard - Ultra Durable 3 (GA-880GM-UD2H), Hard Drive - Hitachi Deckstar 7K1000.C (1TB SATA), RAM - Corsair 2 Gigs (2 sticks, 4 Gig total), PSU - Logisys PS550ABK (550 Watts).