Did you install the USB Cable driver? ... Here is the link for the USB Cable driver ... http://www.moates.net/usb-driver-p-215.html?cPath=78 ... When I install the driver, I plug my USB Cable into the laptop and run the CDM20824_Setup.exe file directly from the website. Sometimes I have run the CDM20824_Setup.exe a second time. ... You will need to configure the "COM PORT" after installing the driver. ... dave w