I was given a full Dell Precision 650 that wasn’t booting. In taking a glance at it, it was obvious what was wrong with the poor thing:

Bad/Leaky Capacitors

Dell Precision 650 Motherboard

I pulled the motherboard and swapped all of the electrolytics out for known good capacitors.

Good Capacitors

After swapping out all of the bad capacitors it fired up like new!

Lots to replace!