Tried setting up Antminer U3 V2
followed all directions but am getting error and bfgminer shows no devices.

windows 7
bfgminer 5.3

 [2015-10-10 19:48:17] Error opening USB hub device \\.\USB#VID_8087&PID_8009#5&
115b31f9&0&1#{f18a0e88-c30c-11d0-8815-00a0c906bed8} for autodetect: Access is de
nied.
 [2015-10-10 19:48:20] Error opening USB hub device \\.\USB#VID_8087&PID_8009#5&
115b31f9&0&1#{f18a0e88-c30c-11d0-8815-00a0c906bed8} for autodetect: Access is de
nied.