Ok so im using a official ati 5870 with a asus m4a78t-e mobo and a 750 watt psu. so my problem is that i install the crad boot up windows (fresh install windows 7 64-bit) and it detects the card all fine every thing like that. so i got download the ati drivers v10.2 it all installs then asks for a restart like it should. then when its rebooting it turns of the monitor for just the bios screen then it turn's back on for the "starting windows screen" then the screen goes black and the computer restarts. also when the computer starts up the fan on the 5870 is really loud. i know its nothing to do with the computer because my 5770 works just fine. any help would be much appreciated i'm dying to get this card up and running.