If your computer screen goes black, the first thing to try is to turn your computer off, and then turn it on again. This allows the computer to re-boot.
prntscr button
Press the no-show button of just freeze it to a black screen.
You have a power button on your monitor or your screen and if you press it only the screen goes black.
Use "PrntScr" (Print Screen) key on Keyboard.
if it is white press the home button and the on and off button for about 10 seconds.
using the I button or on the lower-right corner of the computer screen you will see a + and -. Press the - button
JUST PRESS THE PRINT SCREEN BUTTON AT THE KEYBOARD,THEN THE PICTURE WILL APEAR AT THE "my pictures".
the esc button or if u want to it is tab
No. Only stuff that's on the screen and not been saved.
Press Ctrl and the plus button :)
You press the "Options" button on the login screen, and you press "Force update" on the screen that pops up.
Perhaps the contrast button is stuck - press the button a few times to try and release it.