Hi jpasseri,
I have a couple of questions, what revision and or service pack is Vista, did this problem surface after a MS update, what version is audacity? OK three questions,...
Also, do you get a specific error code from audacity and can you take a screen shot of it, what sound card is your system equipped with,
In windows you should be able to get this info right click "my computer>property’s>hardware manager>
sorry, been a while since I've seen Vista, you will likely have to look through the tabs on the top of the property’s dialog
