Computer Problems Update:

I popped the hood on NV and did some minor work. Removed the modem, checked the seating of all the cards. Swapped the memory popsitions and reseated them. Cleaned off the heatsink.

I ran as many system diagnostics as I could and didn't come up with anything.

Turning off the automatic restart got me a stop error code: 0x0000007F. As near as I can tell this means something in my hardware is screwed.

Sigh.