1. "ULTRA BIOS is not installed because there are no drives attached"
Assuming drives are PATA on same IDE cable, I would be inclined to fit a new IDE ribbon cable. L:ooks like not seeing either drive.
2 "Boot disk failure, insert system disk & press enter"
This fault looks like can't see just the master drive with the op system on. Same remedy plus also check the jumper settings master and slave are correct and one is not set to CS cable select.