Oh .... you just got bit by the ad bug on SevenForums.
If you're not logged on - you see adverts. Reimage must be one of those ads.
Do NOT download anything that isn't part of the tutorial
are the only two things off the top of my head that you are directed to download.
Glad you asked - not a PIAn at all.
simrick pointed you to a specific removal tool for the detected malware. Run simrick's suggestion first
In the Bleeping Computer guide, it asks you to run some of the same scans you already ran.
Follow the guide step-by-step including the repeats - this makes sure no reinfection occurs
simrick might tell you otherwise - I'll defer to her on that.
, then run TDDSkiller, but ignore any downloads in the ads