Vista Unexpectedly Shuts Down On It's Own

hpfanatic

Senior member
Oct 16, 1999
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I have Vista Ultimate 32 bit, Gigabyte DS3, E6300, 4gb Ram. I am running Dreamscene.

For some reason it has started shutting down by itself after being left alone for around 25 mins. I thought it might be overheating so cleaned everything really well, but it still did it. Made sure all Power Settings including all Advanced Power settings were set right, to stay on all the time, and it still shuts down. Goes through a regular full shut down.

I set my screensaver to not come on for 120 mins, and it doesn't shut down! Just stays on. I switch it down to 60 mins or less, and it shuts down.

What else could be causing this?