USE AT YOUR OWN RISK. This solution will modify your windows registry. Please make a backup of registry before proceeding further. Download the below file, unzip it and run with administrative privileges: Download Restore Association Registry file This file restore all the incorrect associations of .LNK files. This has been checked on Windows 7 PC.
The only way to ensure that deleted files, as well as files that you encrypt with EFS, are safe from recovery is to use a secure delete application. Secure delete applications overwrite a deleted file's on-disk data using techiques that are shown to make disk data unrecoverable, even using recovery