Booted fine with HD1.
Replaced HD with HD2. Received NTLDR not found error, tried all the standard fixes.
Used a drive copier to move all of HD2's data onto HD1.
HD1 gained the NTLDR error.
Re-tried all the standard fixes.
Found a NTLDR boot disk which allows me into windows. It also allows me to boot into the windows repair install.
Re-tried a lot of the fixes, now have blinking cursor error.
I can still boot with the boot disk. I simply cannot ween the machine off the boot disk, however.
I did update the bios from 1.01 to 2.44.