How to disable restrict USB/Flash Drive in Windows 7


If u want to disable an USB drive on a PC. Its pretty easy to do.
A USB drive can be disabled on a computer.
To disable the access to USB port, in windows XP, Vista and Windows 7:

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

To -enable again a disabled port:
1. Click Start, and then click Run.
2. Type regedit, and then click OK. (Or simply open registry)
3. Navigate to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
4. In the right pane, double-click Start.
5. In the Value data box, change its value to 3, which you changed to 4 to disable the USB drive and then click OK.
6. Quit Registry Editor. 

AS simple as it Gets.

NOTE: Disabling USB ports totally also disables the ability for Windows to use USB based keyboard, mouse, webcam etc...

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