So about half way through the process of PC Mover loading the "moving van" file, Desktop 4 took its final nosedive. This time the drive failure is total and absolute.
Alternative attempts to recover the drive using copies of the files made into the network didn't work either, along the way I think I fried a second drive making me think the problem is in Desktop 4's power supply. So Desktop 4 is headed to complete and total retirement.
The data was backed up. It was the programs (A LOT of programs) I was trying to avoid re-installing.
A WinAudit I had run a couple of months ago shows 177 installed applications. This is not going to be fun.
Memo to self: I need to re-evaluate how I do backups to the network....