Solved: Deleted important registery files!

Hi, as the title says I deleted important registry files. It was accidental, I wanted to uninstall microsoft office pro plus 2013(or something like that) with Revo Uninstaller Pro because I wanted to make sure nothing was left behind. However, after I deleted it with the scan for leftovers (it asks you if you want to delete leftover registry and then leftover files and folders) my computer started to **** up. My theme changed to the basic grey thing, when I want to navigate the Internet it doesn't work... I knew I did something wrong, so I wanted to restore my PC using system restore. However even that isn't working. When I go on the page after clicking on system restore, it gives me an error with about a shadow file or idk(I'm not on my PC right now because Internet doesn't work as said above). I can't even click on a restore point because of that error.

I can however boot normally so that at least is good. I am extremely confused!! Please help!


Is Revo uninstaller a good or bad thing considering what it did to my PC(or more what I did to it by trusting them)?

Thank you!