Dimension E310 restarts automatically

Folks,

 

First post with Dell and hoping to find some ideas here...

 

I have a Dimension E310 that will restart by itself at random times.  At first, I thought there might be a virus doing this, but the PC is clean.  You will be working and it's appears as if a "ghost" is pushing the on/off button according to the process it takes.  Then, when trying to restart it will try for a 1 second or so and restart..click/click - just from the power button.  If you give it time or unplug main power it "might come up" and run for 10min-20min..pending.  Beep codes and lights aren't helping much since it's so random and at different times. 

 

Now, here's what I've done so far...

 

- I know about blue screens and it's set to NOT automaticall restart.

- BIOS has been upgraded from A03-A04 and defaults loaded.

- Power Supply has been replaced.

- Memory had been tested and also replaced.

- The F12 Express Diagnostic test (the one time it made it through) showed nothing.

- All internal fans are working fine and clean.

- Heat seaker deal is clean and is not over-heating.

- All cable and memory have been re-seated.

- I will do it's quick stop/start when hard drive, cd drive are disconnected.

 

 

This thread is almost an exact match to what's happening and it ends with

http://www.windowsbbs.com/showthread.php?t=67757&page=2

"Hi,
I've had a similar issue. After troubleshooting I believe it was a faulty power button on the front of the case. hope this helps."

The E310 does have an all-in-one type power button in front with lights, 2 USB ports. etc that worries me!  Andy there might have been an issue recently where pulling out a flash drive caused..lets say... a little friction :)  I wonder if that is enough to blow this power button unit and make it faulty.

 

Anyone else had to replace this piece?

 

Any help would be greatly appreciated.

 

Jeff