You may need to download an audio codec to fix the problem too. Sometime the device manager will have a link for an updated version (try using the link first). Check you device manager also to see what version may have been there or may still be there. Make sure you have the proper name, model number, serial number and or sid number on hand so you can get the right driver. Sometimes the manufacture will not only have the driver download of the original that suppose to be there, but also have an updated one to download.
If you haven't already done this, try going to the man Manufacture's web page, get into the drivers & downloads area to download the driver that should be with or installed your Laptop when first purchased.
