Visual Studio IDE Not Working

I recently migrated to a new computer and now Visual Studio is not recognizing the asp: namespace.  When I look at an ASP.NET page, the asp: tags are underlined with green lines stating that those tags are not supported and there is no Intellisense for any .NET control.

Html and Telerik Intellisense works fine and the pages compile and run without any issues.

Has anybody seen this beofre?  How do I regain Intellisense for the asp: namespace and .NET controls?
ktolaAsked:
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Carl TawnSystems and Integration DeveloperCommented:

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kevp75Commented:
Try re-installing the .Net Frameworks.   Something may have gone haywire during the VS setup on the new pc
ktolaAuthor Commented:
Carl -

     Thank you for the link - reading about old VS 2005 files got me going down the right path.  As it turned out, I had to uninstall everything and then MANUALLY DELETE THE PROGRAM FILES FOLDERS to remove old information that was causing issues.

     Once I cleaned everything out, I ran System Mechanic which removed a few (i.e. 12,000+) empty/bad registry settings.  Then I reinstalled and everything worked.

     Thanks!
ktolaAuthor Commented:
Got me going down the right path
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