my monitor shut off after of few minutes,

[bray]

[size=14]when ever i turn on my pc,my monitor will shut off after of  few minutes.i'ved try to changed my monitor and still the problem remain.what should i do? [/size]

[Backdated]

Right click your desktop and select "Properties" from the context menu. Click on the "Screensaver" tab, then the "Power" button. Set your power saving settings as you want them.