I've been using BiaB through DOS, win XP and now Win 10 and have done 5 years of singing to and with my assisted living friends. I appreciate having immediate custom key and tempo changes available when running it live. Getting older means more computer mistakes so I still feel a beginner. I just ran into a lockup as described below.

My midi output driver, microsoft GS wavetable synth,is fully installed but not available. It is classified as "being used by another program" I tried a reboot a forced closing, by task manager, of the unresponsive BIAB file then another reboot to no avail.
I have no alternative synth and wonder how I can restore operation.I am due to be entertaining friends tomorrow!