So, I bought a refurbished sapphire vapor-x 7950 to pair with my current vapor-x 7950. I installed the gpu booted my computer and my computer froze at the user login screen. Then i realized i forgot to uninstall the drivers, so i did that put back the 2nd card and the crossfire bridge and booted the computer. now it froze right after the windows loading screen completed, all i got was a black screen.
Odd...
My next thought was to try the 2nd card by itself. buuuut my sabertooth 990fx mobo's vga led error came on and the card wouldnt output any video at all not even the POST. WTF, isnt a refurbished card factory tested before it's put on sale?!? Believing that i put back my original card with the 2nd card and tried safe mode.
IT WORKED!
i could see the 2nd gpu in device manager as radeon 7900 series, hope at last! though in safe mode there is no way to test the card. So then I tried a ubuntu live usb with both gpus to see if its an os problem or if the 2nd card really doesnt work.
Ubuntu logo comes up with the white and orange loading dots, woot! after 10 seconds the loading dots turn orange and freeze, D=. waited 5 min. still frozen. Reboot, all the loading dots light up orange after 10 sec. and freezes again.
*sigh*
This is my first experience with crossfire, so tell me guys is the refurbished card a dud, or am i missing something?