How to Check the Backlight

简介

This is how you test your backlight. Figuring out whether or not your backlight works is easy. it also helps narrow down the problem.

My laptop's backlight is turned off because I'd rather not break my screen for this guide...
Also, Before you start, have you tried turning up the brightness?
This is a laptop with a display that shows nothing.
Shining a light on the display, you can see a faint image.