S2885ANRF Reboots or Locks Up When Case Is Jarred

I've had a S2885ANRF running two Opteron 252's for a couple of years now and have suffered reboots and lock-ups when the case is jarred. Not
every time it's touched does it do this, but every time it has re-booted or locked-up it's because of touching or jarring the case in some small
way.

I recently re-installed the OS due to a corrupted HD that was a result of one of these lock-up events.

What should I look for or replace in an attempt to cure this?
How can I tell if it's the motherboard?

The PS is the cheapest to replace - I've swapped RAM with another machine and this did not change anything.

It has a 460W - Enermax 465P-VE-24P ATX-EPS/SSI power supply, PNY Quadro FX500 AGP card, 4 GB ram, 3 SATA HDs, 6 80mm fans, and a DVD-ROM -
that's it.
Do I need a larger power supply?
A new motherboard?

Thanks for any help!

- John

 

Honestly, I'd check for shorts on the bottom of the motherboard
against the case. That would certainly cause a reboot. maybe it's
just not close enough to short unless you jar the case.

 

Thanks - I did not think of this and I'll take a look. I'm going to replace the PS anyways just in case.

- John