How to disable restrict USB/Flash Drive in Windows 7

How to disable restrict USB/Flash Drive in Windows 7

To disable the access to USB port, in windows XP, Vista and Windows 7:

• Click Start, and then click Run. 
• Type regedit, and then click OK. (Or  WINDOW+R) 
• Navigate to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor In the right pane, double-click Start. 
• In the Value data box, change its value to 4, which was 3 and then click OK.

To re-enable a disabled port again:

• Click Start, and then click Run. 
• Type regedit, and then click OK. (Or simply open registry)
• Navigate to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
• In the right pane, double-click Start.
• In the Value data box, change its value to 3, which you changed to 4 to disable the USB drive and then click OK.

Now whenever a user will attach a USB storage device which is already installed in system, Windows will not detect it and it‟ll not be shown in My Computer.

So enjoy.