PC never wakes up after monitor switches off

Soldato
Joined
22 Nov 2007
Posts
4,266
Hi All

I've set my monitor to turn off after 5 minutes of inactivity. It usually wakes up fine if i do something within a couple of minutes but everytime i leave it longer than say 10 minutes it doesn't wake up from a keyboard or mouse click.

The only way to get it going again is to do press shift,ctrl, windows key and b at the same time. Then i hear a beep and the screen comes back on, any ideas why this happens please?
 
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