I changed my PC operative system to Window 7 Pro and the westell e90-610030-06 modem is not working, the USB light is off and the message I get is not connection, I called ATT, my internet provider and the person who I spoke to told me to go to "local areal connection" and select disable, the icon dissapear and not sure if that was a good idea. Obviously ATT is not going to help because they said there is a PC problem,
Can you give me any help

Computers & Internet - Westell Wirespeed - ProLine 6100 Router (C9961001100)