Screenshots are incredibly helpful for capturing images on your Windows desktop, but the method for taking one on a Windows laptop or PC ... pressing the Print Screen button on your keyboard ...
There may be nothing wrong with your computer screen at all. Instead ... When your desktop PC boots up, you’ll usually hear a small beep from a speaker that lives inside the tower.
Occasionally, your PC may try to boot from the wrong drive—and when it doesn’t find an operating system, it will just give you a black screen (sometimes with a blinking cursor in the corner).