For the first time since I built this computer nn years ago, I started getting BSOD's and abrupt shutdowns. For reasons I won't go into right now, I discounted Windows or drivers as the cause. It all boiled down to hardware failures. It only took one look at my motherboard to know the reason. It was those bulging 6.3vdc capacitors on the 5v bus. I changed out those (six) caps last week and have had NOT ONE hiccup since then. It's amazing all the hate and discontent that a few bad-caps can cause. I've tweaked and tuned Windows XP for the very Optimum Performance and crashes of any type are just not in the 'Program'. I keep my PC surgically clean and defragmented, so there's no need for BSOD's.