If you want to disable or unable System Properties option. Go to start and type Regedit and press enter. Go to the following registry key. Hkey_Current_User \ Software \ Microsoft \ Windows \ Currentversion \ Policies \ Explorer Modify/ then create dword data type Reg_Dword and name it (nopropertiesmycomputer)
(0 is use to show the properties / 1 is use to hide the system properties) save settings exit from registry and restart your computer.
