I picked up a new in box Mx-990 off ebay this week. I have a MX-780 so am familiar with using Complete Control. I tried to program with Complete Control and it won't connect. The remote chimes when I plug it in with the USB and shows the charging indicator. However it should show up in the list of HID devices in device manager when I plug it in but it doesn't. I tried multiple USB cables on 3 different PCs with no luck but my MX780 showed up on all three.

Any suggestions or should I start talking to the seller about a refund.

Thanks for any help.