Try this:
Go to Advance Power Settings.
Set hard drive to turn off a minute or 2 before sleep.
Set Hybrid and Hibernate modes to "Off"
Under USB settings select "Disable"
Under Multimedia select "Allow ....."
"Dan" <> wrote in message
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F313B1C-B2EF-405F-89B5-...
> Hello, my vista always went to sleep but i remember after i installed my
> xbox360 extender in media center the computer won't sleep the screen will
> just go black for a sec then it just stays on. I remember something came
> up
> when i was installing the extender about an option im not sure what it was
> called maybe "always on" but i can't find the option in media center.
> Anyone
> know what could cause this problem.