With Windows XP my Midistart keyboard works without driver, with Windows 7 it is not recognized and do not work.

To use the older Midistart, Midistart-2, Midistudio, Midistudio-2 and Midicontrol-2 with Windows 7, it is necessary to change an hardware EPROM which contains the firmware. The easiest way is to use the keyboard via MIDI with a class compliant MIDI interface, like our Midiface 1×1 II. The functionality then will be the same like using the keyboard with USB.