Having the same issues. Running Windows 8.1 64 bit. This keyboard works on a Windows 7 64 bit machine with no issues however, but I want to use it on my laptop, the Windows 7 machine is a huge monster of a computer.
The keyboard is detected in my "Printers and Devices" and named properly. My system is in Swedish, and it says "The unit is being configured".
It has the latest firmware (126.96.36.199?)
In my Device Manager list, it's detected as "USB Audio Device", but it's greyed out, and it ONLY shows when "View hidden devices" under the view menu is ticked. So I'm guessing it's trying to configure it but it can't...
Attached some images:
The first image shows the "Printers and Devices" page.
The second image shows the Device Manager tab with hidden devices not showing
The third image shows the Device Manager tab with hidden devices showing.
Frustrating. I tried everything everyone wrote on this board, nothing does it.
I have yet to try another cable. EDIT: Tried changing cables and it didn't change a thing. Also tried checking to see if it could be a compatibility issue with USB 3, but no.
I want this to work so badly! The sounds in Analog Lab sounds delicious, and it's a good looking keyboard and for the money it's a dream machine. Too bad it doesn't work.
If I were to venture a guess, I'd say that there's some sort of generic USB MIDI driver missing on my system, but I tried downloading something like that and nothing helps... Maybe Arturia can help out with some generic USB midi drivers? Or at least look up this issue since it seems there's a great deal of people who are having it.
Will eventually try to install Win 7 on this laptop to see if it works with that. If that is the case, then it's just something wrong with Win 8.1 and this device, probably easily solved with software drivers from Arturia.