The other day I was working on a graphic design job and tried downloading Helvetica from cnet (at the time I didn't know what Helvetica was a licensed font - I thought it was a free font (I'm quite new at graphic design)) and absentmindedly downloaded an installer which proceeded to install something called reimage. Now, I'm not sure if it's the same as Reimage Repair, which came up a lot when I googled it (it only refers to itself as Reimage), it has a light blue logo with lowercase "re" as the logo (I'll grab a screenshot next time it comes up). Avast and Malwarebytes were not able to remove it. It acts vaguely like an antivirus, but it's fairly obvious that isn't the case. What do I do? Do I just put all my important files on a thumbdrive and throw this laptop out the window?
Computer info: Windows 8, made by Toshiba, ~2 years old. Uses Malwarebytes and Avast.