I'm trying to restore the BIOS on an AOD260. It's suffering from a black screen at start up, fan spins for a couple of seconds then stops. I've downloaded the latest bios and renamed the file NEW70x64.fd as suggested in the service manual. When I try the restore the memory stick is accessed and the HDD light flashes occasionally but the restore process never completes. I left it all night and next morning the fan is still running and USB light still flashing. I'm thinking maybe it's the wrong file or name or I'm missing something else. Although I've tried leaving the file name as is and one or two other names. Tried using an external monitor to make sure nothing else is diaplayed, but that's dead too Any ideas please? Thanks