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This could be due to a number of reasons.
1. Your power supply became unplugged or battery life died. Check to make sure it is plugged into an outlet and the battery still has about 20% left.
2. DVI or VGI cable came loose from the monitor. This would stop the monitor's functioning.
3. You bumped one of the F keys on the top of your keyboard that may of disabled your display.
Wiki User
∙ 8y ago
Wiki User
∙ 17y agoThe most obvious cause of this is that the power settings on your computer are set to shut off your monitor after a given number of idle minutes. If you right mouse click on your desktop and click properties then select the Screen Saver tab and click the Power button. Change the Turn Monitor Off to a better greater time period.
Wiki User
∙ 16y agoThere are many reasons a monitor can go blank or black. If the monitor comes back on when you press a key the most likely thing is your monitor is going into a "power save" mode. In windows you can set your monitor to go off after a period of time. To check or set the period of time open the control panel, power options.
Wiki User
∙ 15y agoThat depends, if you have your screen saver set for a blank screen this would cause it. Also take a look at your power saving options in control panel. See if your monitor is set to turn off after a time of inactivity.
Wiki User
∙ 15y agoIt is likely a "screen saver" feature. Check both Windows and your monitor settings, it can be adjusted or eliminated.
Wiki User
∙ 14y agobecause those sites are blocked
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