This behavior indicates that the AutoMount feature of the Mount Manager service (MountMgr) is turned off.
To turn on the AutoMount feature:
1. Open a CMD prompt.
2. Type: MountVol /E and press Enter.
NOTE: The above command sets the NoAutoMount Value Name, a REG_DWORD data type, at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MountMgr, to 0. The default data value is 1
NOTE: If you type MountVol /N, you set the NoAutoMount data value to 1