Dell inspiron 14 7000 series problem

[Techgirlll]

So basically I tried updating windows 10 on my laptop but by then the free update period got over during installation. So now I'm back to using the windows 8.1. But after that, my laptop isn't updating any other applications. The other day I was using Internet Explorer but then suddenly in the middle of the browsing session my laptop blinked and then shut down and then restarted on it's own again. Since then the screen has been black. Like I can't change the theme or anything and the screen is black ever since, but I can use the Internet and stuff. Can anyone please help me with this?

 

[webworkings]

I am wondering how it is that you can use the internet, from the laptop, with a black screen?