How to Fix a Beeping Computer With a Black Screen. When a personal computer starts, it runs a Power-On Self Test (POST) to check that various hardware components are working correctly.

Take these tests if you want to find out how good your computer display is for motion handling & gaming. Check frame rate, motion blur, moving images, ghosting, etc.

Find out how to clean your computer screen, avoid damaging sensitive components, and maintain a clean monitor for longer periods.