Unwanted downloads and Now cannot get rid of it.

This is a nonintrusive advertisement trojan, and it's very difficlut to get rid of. I've got two methods for taking care of it, but I will tell you that many times the first doesn't work and you have to do the second.

First let me tell you why these are so difficult to get rid of. When you get the bug, and it first opens, it puts several other hidden copies of itself in the machine. These copies are dormant, so it hard for your antivirus to find them. If you get rid of the active one, then one or two more open, leaving several more copies behind. Here's where it gets tricky, the it leaves behind the copies in places where most antiviruses do not check, or at least on a regular basis, ie.. picture files, registry files, driver files, screen savers, etc... So, when you think you've gotten rid of it, it comes back in a week or so.

Now the removal methods.
1- Go to filehippo.com and download CCleaner. Run your antivirus, I use AVG, and find it to be veryt good in conjucntion with the CCleaner for this problem. After the full computer scan, empty the virus vault, and run the CCleaner, registry cleaner first, then the regular cleaner. This will take care of it, but it may be temporary. If the pop ups come back in a week or so, then move on to the second.
2- Reformat the hard drive and install a new operating system. Save nothing, anything can have the bug in it infecting the new system, and you back where you started. I've had many machines that the bug came back after step one, or by backing up files and adding them to the new system. This is the only 100% sure fix to this annoying bug.