How to disable/enable USB Port in Windows 7 ?

Hello All my Friends , I hope you Are visiting  my Website Daily For New  Tips , many people ask how to How To Disable / Enable Access Of USB Port  in school ,clg, sybercafe etc.   so Today I am showing  here how to How To Disable / Enable Access Of USB Port.  Just Fallow Simple  Steps And got Disable / Enable Access Of USB Port.

1)   windows Key

Trick to Disable ShutDown of any Computer

Trick to Disable ShutDown of any Computer

computer tips, funny computer tricks, funny pc tricks, Tips And Trick  

There is a Cool and simple Trick to Disable ShutDown of any Computer. We can Play this Trick on our Friend's Computer or can be used to annoy the enemy. We can prevent people from Shutting Down their Computer.
Here is the simple Trick :
1) Start  >>  Run  >>  type "regedit.exe"  >>  HKEY_CURRENT_USER\Software\Microsoft\Win dows\CurrentVersion\Policies\Explorer.