Need both these posts first one is only if the user is a domain user and has regedit locked down.

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http://stevenwhiting.com/blog/?p=1306

Found by Phaz

Run cmd

whoami /all

Find their SID

Run regedit as admin and go to HKEY_USERS

Find their SID and edit whatever is needed.

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http://www.technologynext.org/lnk-file-association-fix/

Manually fixing the registry

This is yet another way to fix the issue. Follow these steps:

  1. Click on the “Start Menu”, type regedit in “Search Programs and files” and hit Enter. If that doesn’t work, go to C: drive -> Windows and then double click on regedit.exe.

  2. Navigate to following location in registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.lnk

  3. Expand this registry branch by clicking on the arrow. Delete the “UserChoice” sub-key.

  4. Close the Registry editor and restart your PC.