When I bring my Windows 7 Home Premium desktop out of sleep or hibernation, all the normal system sounds play in a distorted manner. If I reboot, then the sounds play normally. I have an on board 5.1 HD 6 channel audio codec and have removed the driver, then got Win 7 to find the latest driver (Microsoft) but that makes no difference. On my purchase order details I find: Microsoft UAA Function Driver for High Definition Audio Adi 1986. If I try to play anything in my media folder all I get is a distorted hiss, I can't detect any 'music' at all. I don't have a spare PCI slot to fit a sound card so I would like to find the reason for this on board audio problem but not sure what to do next! any pointers would be great. Thanks.