I recently bought a Leadtek Nvidia Geforce 8600 GT online 100% sure that it was fully compatible with my com (which ive built and upgraded since i was 13, 4 years ago) but i quickly ran into a huge problem. at windows loading screen the loading bar would occasionally freeze and my computer would reset, and if it got onto the desktop doing something such as changing the resolution or trying to start a game up it would sometimes show the blue screen of death and the restart again. when i say sometimes its more than just once or twice a day, its several times. i have a 500watt PSU - PCI Express and ive checked the temperature, its all fine. whats weird is it seems to settle in through the day, so when i wake and turn my com on, itl most likely restart on windows loading screen, and then after a few restarts getting onto the desktop it will restart a few times through the morning, then when my com gets warmer and has been on a few hours, the game crashes/restarts are further spaced apart, but i dont want to have to wait all morning to get my com working, and still have to face crashes. please help :P thanks