Frustrating virus/malware/whatever you call it

I recently got some kind of malware on my pc disguised as a program (MagniPic) from what I know I got it through privatise vpn, which I got through tor (had to use tor, since piratebay is blocked by my isp) . It pops up with "please run disk check" and something about a corrupt disk, and it pops up about once every 30 seconds or so. I hunted around for a while for a solution, and came across combofixer, but it won't install properly, and now it says I have to be admin on my pc, so I go to the security properties of my hard drive, and find out im no longer admin, and when I go to change it back to admin, it says I can't. Anyone have a solution? this is extremely annoying. Thanks for an advice.

By the way: apparently system restore doesn't work on it, so that won't work. 

boot safe mode without internet and run it. 

Find a flash drive and put Malwarebytes. Boot into safemode WITH NETWORKING! so you can update the malware database, and run a scan with Malwarebytes.