Why is my chromebook not working?

Before my chromebook stopped working, It would sometimes just randomly go on a black screen and if you tapped it gently it would go out but then one day it just went on the black screen and you couldn’t use it. No matter what you can’t see anything on the screen, it’s just pure black and we can still see a bit of light coming out of it but everything is black and you can’t do anything on it. Also when we charge the chromebook, the battery color is red. I hope someone can help.