So the motherboard knows the hard drive is there (since you can install/reformat/reinstall), but it won't actually boot from it.
As a quick-&-dirty option, hit
F12 at the POST screen and wait for the boot-device menu to come up. Then select the hard drive manually, and it should boot. And when you get to the Windows desktop screen, the first thing I'd do is
enable the Internet Connection Firewall to keep possible worm attacks at bay. WinXP SP1 is quite vulnerable to automagic worm attacks.
So in the BIOS, in
Advanced BIOS Features, there's the two boot-device settings,
First/Second/Third Boot Device and
Hard Disk Boot Priority. I think you want to set the first one to your ATA/100 drive, and the second to Hard Drive, but maybe you already did that?
Oh, and I'm being forgetful. Also look at your WD hard drive's jumper setting. A recent-model Western Digital ATA drive that is on its own data cable, without any other drives, usually wants to be the special
Single Master setting, which is easy to do: just pull the jumper cap off the pins and leave it off, and that's
Single Master.
Any good?
