Are you running Service pack 1? If not, that would be the issue.
Sometimes online installers will cause problems...unfortunately.
So try to install Internet Explorer 11 by using offline installer instead.
Here is a link to download Internet Explorer 11 offline installer for Windows 7 64-bit:
http://download.microsoft.com/downl...70-4B59EA148EAA/IE11-Windows6.1-x64-en-us.exe
So download it and then try to install it that way.
Cheers!
Fixed!!!!