While listening to music on my laptop this morning the Subwoofer suddenly decided enough was enough!

It wasn't bass heavy music (It was Hugh Laurie!) and there has been no indicaiton of a problem before.

I have tried re-booting and re-installing the drivers but no look :(. Most of my love for this laptop is for the sound system!

Is there anyway to fix this or do I need to send it to be fixed, and if I do, how do I organise sending it and how much will it cost - I bought the laptop as a refurb so I believe there is no waranty with it?

Thanks

Chris