I have gone into Control Panel/Sounds & Audio Device/Properties. When I go into the volume tab it states No audio Device and everything is greyed out. I had sound on Christmas eve as I was set up with Skype so can't figure out what has happened since then. Can anyone help please?
Try reinstalling the audio driver for your PC. If your PC came from a decent source, you should have a driver disk for the motherboard (or, if your PC uses a separate sound card, it should have its own driver disk). Otherwise you'll have to download the required driver. (Try the website of your PC manufacturer first. Otherwise try the website of the mainboard manufacturer).