Hi all. I have been having problems recently which I have researched as much as I could without replacing parts but I have had no success, so I am here to ask someone with a bit more knowledge if they know what the problem is. I have had blue screens occuring more and more over the past few weeks. My old HDD was full and worn out so I bought a new 500gig to see if starting fresh would help. I was able to put Windows XP on it, a few days later I was updating to SP3 when I got many errors again. I tried to repair Windows XP back to before installing SP3, but now I go through the setup proccess and once it gets to 100%, it blue screens with the PAGE_FAULT_IN_NONPAGED_AREA 0x50 BSoD. Everything I have looked at and what people have told me is faulty ram, or my motherboard is on its way out. Both are approximatly 4 years old and well worn. I tried different RAM sticks, but the problem still persisted. Do I need a new motherboard, CPU and RAM? Does it sound like my PSU (AcBel 510watt) is underpowered? My setup is; Windows XP Home Edition Pentium D CPU 2.66GHz (2 CPU's) Acbel 510watt PSU Intel Desktop board D102GGC2 1gig DDR2 533MHz RAM 500gig HDD 8600GT Graphics card DVD-ROM drive 2 Case fans + 2 fans connected directly to MB Wireless router card All parts except MB, CPU and RAM have been replaced from the original system I had. I am a gamer (strong games such as Lord of the Rings Online), so I have been told my games could have worn out my MB and RAM. I cannot get any information off my HDD such as minidumps because it no longer has an OS (it crashed during setup so now I need to repair it, but I can't get through the process without a BSoD). I have also tried two different WindowsXP setup discs to see if one was corrupt. If anyone could say what it sounds like, or what I can try, it would be most appreciated. Reply if you need anymore information about error messages etc and I will remember best I can. Cheers.