I like lappys... they earn me loads of beer money (mainly from replacing DC jacks when people trip over the power lead!)
Anyhow.... SA80 doesn't seem to be a correct model for an Acer Aspire (isn't a SA80 an assault rifle!)
But, once the device manager and services have been checked it's worth finding, downloading and installing the drivers for the sound card from acers site, double check the model number and get the drivers from here..
http://www.acer.co.uk...t21k=1&CRC=3713735360