How to fix win 7 exe file association

These don't work:

• http://www.sevenforums.com/tutorials/19449-default-file-type-associations-restore.html
• http://www.sevenforums.com/general-discussion/59497-can-not-open-exe-files.html
• http://support.microsoft.com/kb/950505
• http://www.winhelponline.com/blog/restore-exe-file-asso-windows-7-vista-incorrectly-associated/
• http://support.microsoft.com/kb/2656106
• http://www.howtogeek.com/forum/topic/broken-exe-file-association-and-cant-run-regedit-to-fix-it
• http://www.sevenforums.com/general-discussion/5627-exe-file-association.html

try these:

• http://www.thewindowsclub.com/fix-unable-to-open-exe-lnk-files-windows-7

these worked:

• Portable Free Window Registry Repair: http://www.softpedia.com/dyn-postdownload.php?p=105067&t=4&i=1
• Advanced System Care: http://www.iobit.com/downloadcenter.php?product=asc-free