How to get rid of pen drawing on the computer screen?

If it is an old-fashioned display such as CRT, it can generally be erased directly because it is a glass screen.

If it is an LCD screen, you can try to wipe it with a wet cloth when the power is off.

If the wet cloth is ineffective, consider other cleaning liquids, such as alcohol, xylene, n-heptane, gasoline and other oil-soluble liquids. But some liquids are corrosive, so they can be used in small amounts. Wipe off the liquid with a dry cloth immediately after wiping, otherwise the liquid of the ballpoint pen will be wiped off, which may also cause permanent damage to the screen.

If you don't have this liquid at hand, you can buy a special screen cleaner, which is not only harmless to the screen, but also has a good cleaning effect.