To start at the beginning, what is your selected audio device in BiaB?

Look in Options - Audio area. Make sure you are actually using the Presonus.
Then make sure the Presonus has good connection to computer (as Mike said).

Can you tell what it changes to when the yellow box comes up? (check windows audio again to see what changed).

Just a couple ideas I came up with to get started from.
The message is a little ambiguous in that 'the default driver changed' could mean the actual driver was changed, or it could mean the driver's settings have changed.



I do not work here, but the benefits are still awesome
Make your sound your own!