The tech is/was wrong, you had an infection for sure. The virus is what destroyed the antiviruses. Malwarebytes likely corrected it the first time around, but sometimes an infection can leave some undesired effects following.
I'd like you to run this AV next.http://www.hitmanpro.nl
Click downloads. Download the version that pertains to your system (32-bit or 64-bit), you're likely 64-bit if you're running Windows 7. Run the scanner, its fast. If it gives you a clean bill of health, you're likely ok on the virus front (it will find cookies, but they are harmless).
Now, as for a file being downloaded multiple times, its either adware/malware, or its being cached. Caching is what happens when you view any page, your browser automatically downloads pictures/etc so that when you come back to the page, it loads faster.
You can clear the cache anytime, or have it clear on browser exit by setting it up that way.
For Internet Explorer:
Tools > Internet Options. On the general you'll see" delete browser history on exit", you can also click Delete
to manually delete what you want.
tools > options, and under the privacy tab are the settings.
However, "dad's fun" sounds like a program that's more or less attached itself it to the browser as an addon. Easiest way to clear this is to go to start > all programs > accessories > RUN
and hit enter, click the advanced tab. Close ALL
browser windows including this one (internet explorer is a browser for example), and then click restore advanced settings, click reset
, and click reset
again. Which will strip the addon.
Now, when you open Internet Explorer again, it will appear a bit cleaner, to reenable the menu bars. Tap the alt
key, click "View > Toolbars > menu bar". Then "View > toolbars > Favorite bar" and that should bring you back to what you're used to, minus the pop up.
I know that's a lost to digest, and for the last step where you close Internet Explorer, you may need to print this page or write down that step in order to complete it since you'll need to close your internet browser for it to successfully work.