press ctrl, alt and up. hope this helps :)
If it is just the monitor that is shutting off, then there might be a problem with the monitor with staying on. If by 'screen', you mean the actual computer goes off and produces a black screen, then your computer might be set to go into hibernation quickly, or it might have a mode where it goes into a blank screen saver quickly. Check the computer's settings to fix that problem.
buy a new screen.........................
Re-boot the computer.
Eat your computer
buy a new one it trash
i have same problem how to fix it!!
Your screen goes dim because all the energy from the battery in the charger goes into you're laptop so when you unplug it. It goes dim but there is ways you can fix it that how my laptop works.
get a new hard drive or fix ur old one
Restart your computer and do not use windows
On your computer screen itself, there should be a menu button. Click on that, and go to positioning, where you can move your screen horizontal or vertical. Try that. and if not, find a way to zoom your computer screen .
Throw it out the window and find some Orange Juice to calm you down.
It seems the sound drivers are missing or corrupted. In addition there seem to be registry errors in the computer. To fix this problem it is recommended to update sound drivers and fix Windows registry with Reginout.