Windows 7 64bit version installed.

I have been facing issue with Internet Explorer(Version 11) while editing the application which is hosted in Sharepoint. The content is displayed as HTML. I tried to access the same page on the lower versions of IE and it works perfectly fine. Tried the following steps:
1. Reinstalled IE.
2. Added the link to the trusted site.
3. Performed Windows updates for IE.

The content is displayed as follows:
================================================== ==
<div class=ExternalClass1FD98F998F0D44A1987F12D687651D1 4>
<div><span style="font-size:10pt;font-family:'Verdana','sans-serif';line-height:115%"><span class=WikiPageBreadcrumb><span lang=EN-IN style="font-size:10pt;line-height:115%">
<p class=MsoNormal style="margin:0in 0in 10pt"><span class=WikiPageBreadcrumb><span style="font-size:10pt;line-height:115%"><strong>[[Projects]]</strong></span></span><b style=""><span style="font-size:10pt;font-family:'Verdana','sans-serif';line-height:115%">/</span></b><span><strong><span style="font-size:18pt;line-height:115%">PMT Enhancement</span></strong></span></p>
<p class=MsoNormal style="margin:0in 0in 10pt"><b style=""><span style="font-size:13.5pt;font-family:'Verdana','sans-serif';line-height:115%">Purpose</span></b></p>
<p class=MsoNormal style="text-align:justify;margin:6pt 0in 10pt"><span style="font-size:10pt;font-family:'Verdana','sans-serif';color:black;line-height:115%">The purpose is to create a report on PubComp files that are expected which displays those that have been received for a given month so that we will be able to track down PubComps that have not been ingested. There should be the ability to control what definitions appear as expected on the Expected vs Received Report so that we can eliminate any reports being displayed that are not expected.&nbsp;</span><span lang=EN-US style="font-size:10pt;font-family:'Verdana','sans-serif';color:black;line-height:115%">There should be columns for Print Cost in pub comp definitions.</span><span lang=EN-US style="color:blue"><font size=3 face=Calibri> </font></span><span lang=EN-US style="font-size:10pt;font-family:'Verdana','sans-serif';color:black;line-height:115%">Print Cost information and Return information (Quantity and Amount) would be captured by the PMT and available through the RMS but would not be included in the royalty calculations.</span></p>
<p class=MsoNormal style="margin:0in 0in 10pt"><b style=""><span style="font-size:13.5pt;font-family:'Verdana','sans-serif';line-height:115%">Scope</span></b></p>
<p class=MsoNormal style="margin:0in 0in 10pt"><span lang=EN-US style="font-size:10pt;font-family:'Verdana','sans-serif';line-height:115%">There should be changes to PMT definitions to allow for the collection and reporting of new data.<span style="">&nbsp; </span>The updates reporting from PMT and RMS should reflect new information being collected
================================================== ====

Thank you!