my laptop has no sound. what have i done?

[nick h.]

After that you might as well stay at that site to update your BIOS

 

[baldrick]

it did offer me that option but i wasn't sure what it was so i didn't will do that too then.

 

[audiotech]

This free utility helps with updates.

http://www.download.com/3001-2098_4...501d73284ad299e3e9794f13f152&part=dl-10572602

 

[stowpirate]

Function keys are independent of the OS so might be worth checking. Meaning they could be muted or the volume set to zero? This caught me out a few times