My operating system is Windows XP Home edition. I used to be able to communicate with my keyboard and PC and vice versa but my input driver has disappeared. The Roland driver MPU401 which I believe was incorporated in the operating system has gone missing. I have searched the net but cannot get an answer other than the MPU401 driver for Windows 95 but to incorporate the driver the 'readme' text keeps referring to a disk to go into drive A. Can anyone help me with this. I use BiaB purely for my own amusement and find the communication loss PC to keyboard a 'tragedy'.