Hi, I bought a new Amlifi 75.  Just opened the box and it seems to not work. tried 2 different PCs. both win 10 though, but I dont think that is the Issue.   symptoms: -  all 4 tone lights are on, BT light is on (dim though as far as I can tell). -  when I press BT button it does not flash, or change like manual says. - when I plug in USB cable (tried 2 different ones that work on my printer fine) PC does not make any indication that something has been plugged in. - when I installed drive