The third of the specific trouble shooting procedures at the link says, "A "Stop 0x0000007B" error message occurs after you move the system disk to another computer" which doesn't seem to assume the drive is still in the same PC and instructions given below that might fix this problem if the created file would merge, but it doesn't merge for some reason. If the drive would boot, I could then install drivers for the system to which the drive was moved which I have successfully done on other drive moves.
I do have a PCI SATA add on card I could install in the PC from which the drive was removed, but that PC already has onboard SATA controller. I'm not sure if the add on adapter would work in that circumstance, and I'd then have to move adapter and drive to the other PC even if that would work which is a lot of effort that could be for naught if it didn't work.
I considered doing repair install that you suggest, but repair install reverts to IE5 and Win2k SP4 at best with no updates after that because Win2k is no longer supported by Microsoft. IE6 could be installed after repair install, but there's no longer updates for IE6 either. I may be stuck with that bad option unless I can somehow modified registry to get the drive to boot from where it was moved.