Yes, make sure the drivers are using the same bit rate as RB.

Do you have any error messages or logs?
RBErrorLog may hold a clue.

Did the temp audio directory change?
Could be a permissions thing where RB can't access where it is being told to write the temp files.

Try right-clicking and 'Run As Administrator' which gives elevated permissions as a test to see if it records.

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