Hey, I've started having some serious problems with my PC and after trying various things I'm totally stumped so any help is greatly appreciated. Specs: Intel Pentium D 3.0ghz 2 GB Ram (4x512 I think) Nvidia GeForce 7900 GS Sata 150gig HDD Just before Christmas I got a bad virus/spyware attack which caused all sorts of problems. I cleaned it up but to make doubly sure everything was clean I decided to format and re-install windows xp. I re-installed Windows and put all the drivers back on thinking that I'd sorted everything out. After Xmas I started experiencing random crashes. There wasn't any program that caused the crash, it just seemed to be completely random. To start with it would reboot instantly and then when I got back to windows I got the standard Win XP message saying it has recovered from a serious system error etc. I did some digging around online using the error codes and there were various diagnosis. One that kept cropping up was the issue of potentially faulty RAM. I downloaded and ran Memtest for 7 passes and it found nothing wrong. I have all the right drivers from my manufacturers website and no virus/spyware problems because it's a fresh install. I turned off the auto-reboot on a crash so I could write down the error codes. The latest BSOD didn't site any particular file which I've seen before but the signature was: 0x0000007E (0xC0000005, 0x804ED79F, 0xBACDBA2C, 0xBACDB728). Another thing I should add is that the Windows I installed is not the same one that came with my PC (which is a Dell by the way). My pc didn't come with it's own windows CD so I had to use another. I'm not sure if that could cause any problems whatsoever but I though I'd put it out there in case. I've attached some minidumps too because I'm all out. Thanks very much in advance for any assistance.