Mike-
simply playing the devil's advocate here, it's possible that since your other PSU was bad it may have damaged some of your other hardware on it's way out, it'd be a good idea to try and mix and match your hardware with hardware you know to be working to try and isolate the problem
Mike - sorry for taking so long
the performance of a powersupply is tied into it's temperature, that is, the hotter it is, the less efficient it is
also, electronic components in general, particularly those in hardware as sensitive as what's inside your PC, are very vulnerable to high...
that smacks of a power supply on it's last legs, power supplies are very sensitive to physical shock, it's possible that you maybe knocked it around a bit when you were moving the system
first make sure the fans in the power supply are turning on
if they are, then try this right after your...