I added a nVidia eGForce 8400GS to my unit in mid-August past. Tonight when I started the unit a message popped up during boot "Autoadjust in Progress" over the boot screen. Is this being thrown out by the card? Why now?

Welcome to the Forum RealGomer
Did you get a new Monitor and if so do you have it set to Auto?
"Autoadjust in Progress" is a setting on your Monitor, review your settings on the Monitor Menu.

I checked the settings and it did not appear to be set to autoadjust. It's the same monitor I've been using for the past six months. But yes, it was the monitor playing games. FYI - I also discovered the "expert" who set up the unit originally decided to DISABLE the onboard LAN. What a maroon.

Well on my rigs that have two Network Ports I do disable one of them.
Why to Free the Resources and to keep it as backup in the Primary one Fails.