Hi Keith

If the KN7000 Midi driver is installed via its own program, (Not from Device Manager) then copy the program from the Disc/Floppy/USB to the computer hard drive.
Right click the program icon and choose compatibility mode, then choose the option that worked on your previous OS, and save it.
Double click the icon and the program should then install as if it was an earlier OS (Doing this after the program is loaded doesn’t usually work)

There is no guarantee that this will work, but it’s always worth a shot.

Regards

Bill