Use Software-Level Controls.

 As a final option, you can add a password to each individual file that you want to protect. For example, in Microsoft Office programs, you can open the file to which you want to add a password and then choose File, Save As. In the Save As dialog box, choose the Tools menu, General Options. Enter (and confirm) your passwords to both open and modify the file in the File Sharing Options… section before clicking OK. Now you’ll be prompted to enter your password the next time you want to open or modify the file.

Windows provides several methods of protecting your information, so choose which ones work best for your situation. Then relax, knowing that your key information (including that great cookie recipe) will remain under wraps.

Access Manager - More info

     If the above options do not provide enough security for you, download Access manager for Windows.

Access manager provides much more security than standard ways in Windows.

More info

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