I just put together this system Asus P5Q3, Q9400 CPU, 2 gb ddr3, 600W psu, and the Sapphire HD 4850. When I install Vista 32, everything goes fine until I reboot after installing the video driver. I get "atikmdag.sys - address 8B81DF42" etc... bsod error. Doesn't matter if I use newest drivers, oder ones, ones through windows update, always get the bsod same error. I can boot into safe mode, remove the drivers and boot back up (that's how I'm using it now). Should I flash the bios on the card? Or is this just a DOA card that needs to be RMA'd?