NO SOUND Pavilion dv7-4065dx

HP Pavilion dv7-4065dx; Windows 7, 64 bit; no sound; red light glowing on f11 (sound off/on button); use internal speakers only - do not use ear phone or external speakers. Below is what HP Support Assistant reports:
Device                                                 Status              Driver                    Version
ATI High Definition Audio Device       Enabled           AtiHDmi.sys          7.11.0.7706
IDT High Definition Audio CODEC     Error(52)          stwrt64.sys           6.10.6292.0
How do I get sound back?
Thank you.
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Hi,
Right click the speaker icon in the Taskbar ans select 'Playback Devices'. Double click the 'Speakers and Headphones' entry and in the following window, click the Enhancements tab. In the box containing these enhancements, make sure there is only a tick against 'Loudness Equalization' - remove any others. Next click the Advanced tab and check that '16bit, 48000Hz ( DVD Quality )' is showing - if it isn't choose this selection from the dropdown box. Click Apply and then click OK on all remaining open windows.
Regards,
DP-K
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Hi,
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Regards.
BH
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@rerateusa
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****Please mark Accept As Solution if it solves your problem****
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****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

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