Glad it is working for you  Ed.    Make a note of how you got out of 
this, since it may happen again.

Don't know if your 590 is connected via USB.  Just for the heck of it I 
checked both my Win 7 and XP machines.    If the 590 is connected via 
USB and the power supply is on (even with radio off), the USB audio 
codec for the 590 shows up as a sound device.  I think the only time it 
is a problem  is if Windows decides to make it the  "default" device, 
and jaws is set to use the default device. This is why I have jaws set 
on the XP and Win 7 pc's to use the onboard sound card/speakers and not 
the "default" device.

I don't know why windows sometimes changes what it sees as the default 
sound card, but I've seen it happen sometimes after a reboot,   update, 
or some other system event.
73, Steve KW3A     .