The listing that I have and available for download for default does not include all keys. Several not listed/included could be computer specific.
Check the Event Log (Event Viewer) and see if anything in there looks strange (errors).
Off the top of my head, I do not know of a quick way to get TS back on its own.
You can try booting from the XP CD and select the repair option, with the understanding that I used it only once to repair a services issue (back in the day when it was much easier to break them) and this was not the issue it repaired.