How to get sound back on windows 8 after removing everything

Dec 8, 2018
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I went to the settings and clicked recovery and it had 3 options. I chose remove everything and now my sound is gone. So how do I get my sound back?
 
Dec 8, 2018
4
0
10
Also I'm trying to get into my computer and it won't let me. It's like the screen is frozen. I don't see the mouse and the keys aren't working. It's just stuck on the wallpaper on the lock screen.