|Have you, or is it possible anyone else has....|
- dropped this computer, or dropped anything on it, or subjected it to a physical jolt otherwise ?
- spilled liquid on it, or exposed it to liquid such as rain, or sprayed it with liquid ?
Has there been a power failure event while the computer was plugged into the AC adapter ?
A nearby lightning strike ?
You can't fix that with any software fix.
Either your display assembly is damaged, or wires in the cable between the video adapter and the display are damaged.
In the mean time, you can
- hold the the power button down for at least 4 seconds to force the mboard to shut off
- the next time you boot the computer may want to run CHKDSK - let it do that.
- press the Alt Ctrl Del keys at the same time
- press the Alt and U keys at the same time
- then press U to Shut Down Windows properly, or R to Restart Windows properly.
Try connecting an external monitor.
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1:
DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.
Some laptops will display on an external monitor without you having to do anything.
If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / built in display video only / sometimes both - see the Owner's or User's manual for the model.