Try to flash latest BIOS , and you need to try different drivers. Also boot in safe mode and Start+Run - msconfig , than disable in Startup ATI software and try again...
your 100% right the r9 290's wont work with the bios thats factory installed, i need another gpu that will work with current bios so i can update bios to f2.
i posted the same question over on another forum and someone told me i cant run more than 2 gpu's on these boards or ill fry my gpu's (no parts or the board are damaged i tested them with other gpus, ram and motherboards round at a wholesaler near my place), is this correct? i can only run 2 gpus?
gotta wait till after the 27th because im an immigrant in this country of sheep (australia
) and i dont know anyone with a gpu i can use to update my bios