Several things can cause the White screen to appear on the Windows laptop monitor. However ... You can try cleaning the dust off the components like the computer’s Graphics Card.
You might also want to turn on your display and set it on a white background ... and cost you a fraction of a monitor cleaning kit. Cleaning off some surface smudges or loose dust from your screen is ...
For PCs without a glass coating, the only recommended liquid to dab on your microfiber cloth is a small amount of distilled water mixed in a 1-1 ratio with white ... keeping the screen clean, though ...