Regarding USB Drive (Pen Drive)

If user has the rights for editing the regedit

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies]

"WriteProtect"=dword:00000001

Change the write protect to

"WriteProtect"=dword:00000000

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR]

"Start"=dword:00000004

Change the protect to

"Start"=dword:00000003

Check and revert back