HP Proliant ML350 G3 server keeps rebooting or shutting down

I have a HP Proliant ML350 G3 server that I just upgraded to windows server 2008 from windows server 2003.  It has been fine and we have had it unplugged for a bit until we made space to relocate the server physically.  I added some memory to it (it now recognizes 8 gig), but it keeps rebooting itself and/or shutting down.  I have an identical server I use for parts and tried swapping out the power supplies, same thing.   I cannot get it to stay on long enough to check the Event Viewer and thought I would post the question here to see if anyone has any thoughts or ideas on what to try.
manch03Asked:
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andyalderSaggar maker's framemakerCommented:
If you revert to the original RAM does it work?
manch03Author Commented:
We took that ram and placed in another server.  We could try it after hours.
manch03Author Commented:
We figured out that it was having the cover removed that kept the server rebooting -  After adding the RAM, we did not replace the cover.  After placing the cover back on the server, it has been running without rebooting.

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andyalderSaggar maker's framemakerCommented:
LOL, overheating it. When I can't be bothered to put the cover back properly I just put it on upside-down to keep the airflow correct, not that you can do that if it's a tower model.
manch03Author Commented:
We discovered the solution on our own.
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