I tried to download Internet Explorer 11 for Windows 7 but got a message saying;
Internet Explorer did not finish installing.
Set up can't continue because a more recent version of Internet Explorer is installed
on your computer.
That was news to me, so I decided to check which version is installed.
Thing is, I can't find Internet Explorer listed anywhere, not in Programmes or in
Revo Uninstaller.
Would appreciate any help.

Have located this in Start - All programmes.
It is V 11, and updates automatically.

I don't know this help you or not
but sometimes simple solution can helpful
some updates of Windows is necessary for install IE 11
check your system,it have this updates(?)