Computer does not come out of Stand By

[Guest]

Windows XP and after the computer is left for some time it appears to go into
Stand By mode but will not return; pushing ON/OFF doesn't work and the
computer only can be unplugged to get it to restart.

 

[Thorsten Matzner]

Windows XP and after the computer is left for some time it appears to go into
Stand By mode but will not return; pushing ON/OFF doesn't work and the
computer only can be unplugged to get it to restart.

Try this: "Unable to Use Power Management Features"
(http://support.microsoft.com/?kbid=302414).