Try removing hard drive and booting from CD, just to make sure that CD drive works.
Now that you have HD in your hands, examine it and see if there are jumpers on it. Some HDs have jumper settings for "master", "slave", "cable select" and "single drive". If the jumper is set on "slave", or it is "single drive" with CD device on same IDE channel, then the HD and CD jumper settings are in conflict, thus not working, and the boot sequence will skip HD and CD right to the boot agent that is trying to boot from RIS server via Network card (not same as "network boot"....atleas not with my mobo).
Some system have that option hidden in BIOS. Sort of, "last resort."
If the jumper is set on "master", you can try to plug it in other IDE cable/jack (if there is any other).
Jumper conflict can also produce such boot behavior.
It goes something like this (straight from my imagination):
- BIOS sees New HD
- It clears CMOS
- BIOS tries to configure IDE controller to work with this new HD
- BIOS fails because the jumpers are in conflict (or HD is faulty)
- BIOS tries same with CD drive - with same result
- CMOS remains without HD configuration.
- BIOS assumes that hardware configuration is changed because CMOS is cleared, and resets boot sequence, or the boot sequence is stored …