I have HP pavilion dm3-1103au which i bought about 3 years ago.. Everything was worked fine since the first time I use this notebook until about 3 weeks ago when I used it to watch a film suddenly the sound changed to noise sound and then my notebook sound not coming out at all from speaker and headset.. Then I restarted my notebook and then the sound working normally but after a moment the sound stop coming out again..
I check my sound driver to see any updates but it say my driver are up to date.. Then I go to sound control and test my speakers but it shows a warning that says "the device is being used by another application. Please close any devices that are playing audio to this device and then try again." I dont know what application that is using the sound because it happen when I didnt open any app..
After about several days later, the problem seems to became worst.. All USB ports suddenly have a problem too.. My USB mouse stop working at random time.. Then I try to insert my flashdisk and sometimes it can be recognized but when I try to copy files to my flashsdisk, it disconnected when the process of copying has not finished..
when i go to device manager the 'standard openHCD USB Host Controller' have a warning sign.. I check for updates but it says the driver was up to date.. So I try to uninstall it and restart my notebook.. but it didnt solve the problem..
I have reinstall and upgrade my windows from windows 7 to windows 8 but it still have the same problem and become worst.. now the sound not coming out at all from the speakers and headset from the windows starts.. Please help me.. I have no idea what cause the problems.. I think it's not hardware related..