Mine is a Inspiron N5110 running Win 7.
For the past few months, the audio is not working. I could hear the bootup sound. Once it is bootup, and when I play any (media file or stream from browser) no sound. I will have to reboot again and could only hear the bootup sound.
If I goto Control Panel -> Sound -> Configure ->Test, I hear the sound sometimes and other time it says, sound device is being used by some other program.
Tried the Dell Diagnostics, and no issue found.
Has anyone had this issue and solved it ?