Hi,

Also check for a bad video card or sound card and that all cards are seated
properly if you haven't done so already or have done and should double
check.

Paul.


3 things come to mind.
a. Possible bad memory module.
b. Failing or weak power supply.
c. Over heating problem. (Check your Fan or Fans for proper rotation and
ventilation)
I would swap out the memory /power supply with known good ones in that order
to see if the prob goes away.

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