USB overcurrent notifications no longer appear in Windows Server 2008 or later
Starting with Windows Server 2008 and Windows Vista, USB overcurrent pop-up notifications no longer appear. This is by design. Previously, in Windows Server 2003 and Windows XP, these notifications would appear when USB overcurrent conditions occurred.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB2644994.