Now i have windows Vista i've been through XP and now on vista but this problem keeps haunting me, i've replaced the mother bourd ram hard disks cpu but this problem keeps following me even thought this system instalation is just 4 days old i've had it once just cut out and reset the system after 12 hours then once while rebooting tonight. i've had it twice now on Vista Ultimate and it's just like the systems not happy any one got any radical things i could do to find this problem before i go all out and replace my mother bourd again, my specs are a 3.2ghz p4 prescot HT god help me prescot inside, 4 gb of Ram on an old Abit VT7 mother bourd the rams dual channel 3200 it has 5 hard disks on sata systems a Revo 64 raid card a Sound Blaster Xifi thing and a Radeion X1650 pro AGP 512mb the psu is a kingwin 600 watt thing and the case is a a thermal take my screen is running DVI 22" thing and i need help this problem is following me like bill gates bad smell i need help bad please. mark

http://healyourchurchwebsite.com/20... That's one of many hits on google when I searched for STOP: c000021a {Fatal System Error}