Hi everyone and I hope you can be of help to me I originally posted this on the hardware forum as that is what I thought it was, but have since found out differently during my messing about trying to cure it I used system restore and got my sound back, but since then I have had to format my HDD'S and reload windows 7 64 bit and obviously all the updates that go with it and no longer have a restore point to go back to I am running IE9 which may or may not have something to do with it my computer is a Dell XPS 720 with a Q6600 CPU, Nvidia 8800 GTX GPU, and 8 gig of ram, and built in sound no card. I look forward to hearing from you many thanks Chris