Thanks for all the replies!  Everything's working now!  I removed and
replaced the video, sound and modem cards, all of which seemed loose to
some degree.  I didn't touch the RAM, so I guess that wasn't the problem.
Now, I really think I jarred the video card loose while I struggled with
the new power supply.  I am still at that point where I am pretty scared
about how rough the various components could be handled.  (I look at these
things like they're made of thin glass!)

Thanks again to all!




>If the fan on the CPU powers up, then the odds are really good that
>your powersupply is not the issue.
>
>At this point, you may have issues with something connected to
>the motherboard that was jarred out of place during the replacement
>of the powersupply.  You should remove and reseat all of your
>I/O cards, such as video, modem and so forth.  You should also
>check to see if your ram modules are firmly into their slots, as well
>as the CPU if it is a Slot 1 or Slot A chip.

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