Ok, so I'm spending the weekend building my new machine, get a call from a neighbor who knows I'm home doing all this stuff. His son was trying to upgrade a CPU in their home system, and was having problems...wanted to know if I could come over for a minute and help out. Needed a break, so I said "sure!"

Genius that I am, saw what the problem was right away...

Nice, even layer of thermal paste on the CPU/mobo pin connectors!!! *me* "Uhhhh, I think I know what the problem is...you're not going to like this..."

He'd done a nice job of it, though, each little tiny pin connector had a little white dot of paste in it, nicely and evenly spread!

Last bit of help I gave them...URL for Newegg to buy new mobo and CPU.