How to Block & Unblock usb Ports

In this post I will show how
to disables/blocks the USB
ports on the computer
(PC). Once this is done it
will immediately disable all
the USB ports on the computer. As a result the
you?ll will not be able to
use your pen drive or any
other USB peripheral on
the computer.You can test
this on your own computer without any worries since I
have also given a trick to
re-enable/unblock all the
USB ports. FIRST OF ALL GO TO --> START --> RUN NOW TYPE REGEDIT NOW LOOK FOR THE KEY :
HKEY_LOCAL_MACHINE
\SYSTEM\CurrentControlSet
\Servic es\USBSTOR NOW FIND THE KEY THERE
CALLED :-
"Start"
DOUBLE CLICK ON IT.
NOW CHANGE THE VALUE
DATA 3 --> 4 WHERE ITS BASE IS
HEXADECIMAL
HERE YOU GO YOU HAVE DONE IT
NOW CLOSE THE REGISTRY
AND YOU'LL SEE THE RESULT.
YOUR PC'S ALL USB PORTS
ARE DISABLED TO RE-ENABLE/UNBLOCK USB
PORTS JUST CHANGE THE
VALUE DATA AGAIN 4 --> 3
NOW YOUR PC'S ALL USB
PORTS ARE RE-ENABLED