Thanks for the input. I've tried all the fixes commented on so far.
Have installed the most recent bios, firmware and drivers in all parts. Would change motherboard if there is another with 3 8x pci-e slots.
Ive gone into setup and chose REPAIR option , then do "Fixboot", it writes a new boot strap but if the Operating System disk is not in the cd drive it wont boot. Ive tried both SATA and IDE CD drives.
Thank you again, and please keep the ideas coming