Hi, I had the same problem with you a few days ago.  It is recommended that you disconnect the network and then open the IE, and click Tools > Internet Options > General tab, then you can reset the IE homepage.  Then go to the Advanced tab, click Reset. Select the Delete personal settings check box if you would like to remove browsing history, search providers, Accelerators, home pages, and InPrivate Filtering data. Hit Win + R keys to open Registry Editor and reset Internet Explorer registry settings like start-up page, search page and homepage.  Getting such pop-up site off computers might be frustrated. But you will need to be patient and careful. If you can't perform the above steps, you can refer to these pop-up removal instructions at blog.doofix.com/.../remove-ad-popups.
I keep getting this pop up on IE and I keep "x"  it out but it keeps popping back up.  I went on line and found out it has to do with Flash player and seems like it is a bad thing.  How can I stop it from popping up. 
S.yimg.com pop up