New Comp WoW Error

Ok i got a new comp (well its a old comp that i wiped the hard drive on) i was playing WoW on it before i wiped it and it ran perfectly and after i wiped it when i tried to run WoW it says "Failed to find a suitable display device. Exiting program." any ideas on why this is happening? i didnt change anything inside the comp.

drivers drivers drivers

update them, or post that you already did

to be more specific, you need to find out what display adapter you have and get the updated drivers for it.