Is Win 7 Internet Security 2011 Totally Gone?

So, I got the Win 7 Internet Security 2011 virus on my computer. I ran Spybot Search and Destroy, Malewarebytes, and a McAfee scan, and a guy I know who's good with computers said he couldn't find any of the files related to the virus (I got the list of those files from the site bleeping computer). The warnings aren't popping up, and my computer seems to be running fine (so far). However, when I open the Customization window for the Notification Area Icons, it shows that there is still an icon for mdi.exe/Windows 7 Internet Security 2011. Like I said, though, none of the scans are picking up anything, none of the files related to it can be found (at least not that the guy I know noticed), and there have been no warning pop-ups or anything like that. So, is the virus gone and this just a harmless vestige? Should I still be worried? Any advice?