There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read how to get help
I know this sounds daft but I have been trying to get sound working on my HP530 laptop with Intel 82801G sound for 24 hours and it started working after I plugged a jack into the headphone socket and then took it out again. Sound was then working - a long shot but worth a try.