Hello and Welcome!
Please download the IE11 offline installer here:
Download Internet Explorer 11 for Windows 7 from Official Microsoft Download Cente
Attempt to install IE11 using the offline installer. When the installation fails, zip up and attach C:\Windows\Logs\CBS\CBS.log
Note that if the zip is larger than 8MB you will need to use a file sharing service such as OneDrive, DropBox, SendSpace, etc. and include a link to the uploaded file with your reply.