Hi,
I have given the instructions to update the BC57 driver in the following post.
It did work for him, could you try that too?
If you have the problem still, could you press F8 when it says 'Starting PCDOS' and select step by step mode? This will allow you to find out exactly where it fails. However, based on the information you have given, it should work with the new driver.
Krish