Hi Gadget_man. I don't really know what can be causing this problem, but it has to be either hardware or software. If the problem is hardware there's little you can do about it in a laptop. If it's an error in the sound driver you can try uninstalling the driver by deleting it in Device Manager under Sound, video and game controllers, and then reinstalling it. A quick test I always find useful is to test the various sounds in Control Panel - Sounds and Audio Devices - Sounds - Program events. Click on any sound with a loudspeaker icon alongside and then test the sound by clicking the right pointing arrowhead alongside the Sounds box.
The sounds in control panel all play but with this funny helium sound to it. I compared the sound to my desktop.
If I delete the sound driver will i need a disk to reinstall, not sure if I can put my hand to the disks that came with the laptop at the minute, they are here somewhere but if I don't need a disk I will go ahead and try it.