I am trying to use a Launchpad Mini mk 2. The intention is to use it as a midi controller with Virtual pipe organ software (Hauptwerk). According to the manufacturer, the launchpad is a class compliant device and should work without drivers. It connects via USB. Initially the problem was that Windows did not recognise the device. Device manager displayed it as "unknown device".
It was suggested to me to change the settings in Device manager for each USB Root hub entry, so the power management did not allow the computer to turn off the device to save power. At first this did work, the device was recognised and could be configured in the organ software. However it has stopped working again and gone back to unrecognised device. I think there may have been a momentary connection problem with the USB cable.
The power management settings have not been changed.
I have incidentally tried the launchpad on a different pc which runs Win 10 and it connects to this with no problems.
My question is therefore whether anyone can suggest a way of getting this to work again with the Win 7.