Press Ctrl+Alt+Del at the same time to bring up Task Manager.. or right click on the task bar to bring it up
Click on iexplore.exe, then click "end process"
Go to your Control panel, then Add/Remove programs. Uninstall iWin Games if found.
Using Windows explorer, navigate to, and delete this folder:
C:\Program Files\iWin Games
Reboot your computer.
Go to Windows update
and make sure you have the latest security updates.