Computer Crisis!!!!!!?

So about 6 months ago I punched my computer. I guess the hard disk drive broke. I went to Staples and had it replaced. The computer turns on and works now, except it freezes alot. My computer will freeze when I am watching videos, or just for shits and giggles. I have no clue what's wrong with it.

The worst part is what happen tonight to it. A few weeks ago I tried to download Microsoft Word off the internet, and it ended up being a virus. My computer is now infected with Linkey and Start Savin'. I deleted both, but they still shows up in add-ons to chrome. I can disable Linkey, but Linkey enables itself. And I can not delete it. So tonight I was working on a big paper that is due in a few hours and my computer starts changing the resolution. I can't run Malwarebytes because the resolution is too crappy. I go into safe mode and run a scan. I got the normal virus I always get because of Linkey. "PUP.Optional" I went into regular mode and my computer continued to change resolution. Then out of no where my battery got shot. I am scared it is a virus and I have a big paper due in a few hours. I am scared to log into my student account to turn it in, because I might get my info stolen. I just ran another scan, and nothing was found. Can someone please help me!!