Need help fixing my *bin files they open with notepad

[DRicKX]

Was checking some files until I opened one of my .bin files with notepad and forgot to un-check the "always use this selected program with this kind of file" and now all of my .bin files messed up please help

 

[Tmagic650]

Right-click on a .bin (binary file) and select "open with" remove the notepad entry and make sure the "always use"... check box is unchecked