I have an hp mini 210-4000 that has had no sound for 48 hours, little help?

Model: HP Mini 210-4000
O/S: Windows 7 (starter)
I have had no audio for about 48 hours now and am looking for some help please. At first I thought that it may have been a hardware failure but having done a system check windows is informing me that the internal speaker is enabled and that it is working normally. There has been no physical damage to the notebook either.
I have tried all of the standard troubleshooting techniques that are suggested and have tried restoring everything to the way it was about 4 days ago with no success.
The light next to the mute button has stopped lighting up no matter whether it is set to mute or not. In terms of the software if I perform standard tests and play audio through any programs it is being recognised by everything (speaker icon, 'beats' audio desk, applications etc) but there is just nothing to be heard.
The notebook is set to normally install automatic updates and I have seen from the forums that other people have been experiencing similar problems from across the board. Has an update been released that may have caused this?
Any help that people can offer in rectifying this problem that I'm assuming is software-based would be greatly appreciated. Cheers  

Hi
Please try these steps and check and let me know if this works.
Resolving No Sound or Audio Problems in Windows
Let us know how it goes!
"I work for HP."
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****Please mark Accept As Solution if it solves your problem****
Regards
Manjunath

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