Common computer screen problems are stuck or dead pixels, transient persistence also known as residual images, blank or blurry display and monitor producing flickering lines or waves. When a pixel does not receive a voltage, it remains black and unresponsive. This is the dead pixel.
When the dead pixel problem affects a group of pixels, the screen appears to have big black patches when turned on. Residual images occur when an image gets stuck on the display becoming a permanent residual image on a section of the screen.
Another common computer screen problem is the blank or blurry display. Blank displays could be a result of a power or graphics card issue. Flickering waves on the screen is a sign of a failing monitor, electrical disturbance or line noise.