How to disable /enable access to USB port

Step 1: press win key + R then type regedit

Step 2: Located HKEY_LOCAL_MACHINE * SYSTEM * Current Control Set * Services * USBSTOR

Step 3: in right panel select START double click on START

Step 4: To disable USB port access type 4 in that box n select hexadecimal. click OK.

Step 5: TO ENABLE IT: Follow above step upto step 3rd: Now double click on START: Type 3 in that box click ok *Basic of this tricks just type in Box type 3 - to Enable type 4 - to Disable USB Access