Don’t spray the screen itself but spray the cleaner on a cloth. If you don’t want to invest in a special screen cleaner, use a 50/50 mix of distilled water and white household vinegar.

How to keep your computer screen clean: If you use a laptop, try to always cover its keyboard with a thin microfiber cloth before closing it. ... Unplug the keyboard and place it on the towel.

If your computer is stuck on the startup screen, try these steps: Wait up to 30 minutes and see if the process resolves. If not, disconnect any external devices and restart your computer by ...

If the no signal message also has vertical lines, you know the problem is in the monitor and not in your computer. Press the "Menu" button on the screen and then use the other buttons to browse ...