I have a Pavillion e017 notebook the sound keep gooing off. Device manager shows all drivers are install correctly. I have upgrade to Windows 8.1 and works for a week or so than goes out again I 've also downgraded to Windows 8.0 resfreshed the computer it places new Windows files and leaves my stuff intact sound works but goes off after a few days. I have restored the PC sound comes bck on after few days is back off
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