Where Can I Get A Free Soundcard And Drivers Online?

Firstly, we'd need to know what sound card it was.  You can usually find this out quite easily when you have a notebook computer, as it's unlikely that the hardware will be changed from the manufacturer's setup.

So, if you have a look at your system, and check out who the manufacturer is, that be the best place to start.  Once you have this information, go to Googlem and pop in the manufacturers name.  One of the results will hopefully be the manufacturers website.  Once you go here, there will hopefully be a link named "Support" or "Downloads", or possibly a facility where you can put in the model number of your notebook and submit it as a search.

Sorry that this information is a little generic.  If you want to provide the make and model of your notebook, I'd probably be able to link you directly to the sound drivers.

Just to be clear tho, your "audio devices" and "sound card" are the physical components themselves, and the drivers are the software components.  What I mean here is that your hardware hasn't actually been erased :)