I have a yamaha YMF719 OPL3-SAx sound board that no longer works. The first time I plugged it in, Win95 Plug 'n Play picked it right up and configured everything correctly.
I had to take the board out, and when I put it back in, the sound board no longer worked. I've uninstalled, reinstalled the drivers serveral times. No luck.
Under System settings in the control panel, it says error 9, device conflict. But the kicker is, when I pulled the board out, it was for just a minute, then I put in right back in without rebooting in between. Somehow Plug 'n Pray realized the board was reinserted and tried to configure it, just not correctly.