Well here's the report, power supply bad. While changing the power supply the cpu fan retention bracket snapped, it guess it was brittle. I used an epoxy to make a fix for this, but it is not working and the server is overheating. The way the retention bracket is made on this machine it is not readily replaceable like some motherboards. The epoxy seemed to be working, but the server only ran for about 15 minutes after getting the VPS live again before overheating and now it has turned itself off for safety, so obviously the epoxy did not work to hold the cpu fan down properly.
I am seeing what further we can do to help make this work now. Windows 2003 based Virtuozzo is not able to move to other hardware so that option is off the table here now (Parallels will not issue license for it, it is well past End Of Life). We have given many chances to migrate and upgrade but some have not taken those opportunities due to many various reasons.
I am trying to do what I can to bring this back from the dead now, and get the few remaining virtual machines on it running again. I believe it is 4 VPS running on the node, maybe 5.