Step 1 is to reduce to the minimum configuration and see if it fails.
Be certain to unplug whatever USB ports are not essential.

Assuming that it still fails, install a bigger power supply and test.
Every time this crashes it put your hard drive at risk for content
damage so get aggressive with quality compoent replacement.


On Wed, 30 Jun 2010 13:15:14 -0700, Jim Thompson
wrote:

Windows Weirdness:

Win XP Pro

Suddenly started shutting down (like power switch was hit) when I was
inactive for more than about 15 minutes.

Checked power settings, they were proper for "desktop" use.

Left them alone, problem continued.

Went back and checked power settings, but this time clicked OK.

Problem has ceased (for now :-)

Anyone experienced this?

...Jim Thompson
John Ferrell W8CCW