Thanks for your patience with this. I understand its note asy to help someone when tyou can't physically see the PC. I really appreciate your help
When I go into Standard CMOS Setup, I see:
Hard Disks - Type - Size - CYLS - Head - Precomp - Landz - Sector - Mode
IDE Primary Master - Auto - 0 - 0 - 0 - 0 - 0 - 0 - Auto
This is the same for primary slave, secondary master, secondary slave.
This PC was used by a school and they would have updated the BIOS to suit them and their network... Maybe its a matter of resetting the BIOS to the default? Is that possible?