Intel HDMI-sound does not work

Hi

After i formated my computer the HDMI-sound does not work any more. I have tried reinstalling the driver. The computer is a HP6450b. When I connect the HDMI it just says "Not connected" on audio device.

I have attached som screenshots of the problem. Any tips?
sound.png
sound2.png
HFK-IKTAsked:
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HFK-IKTAuthor Commented:
The problem is fixed! I installed an old driver from back to 2010. Exactly driver version: 6.12.0.3047 from 03.02.2010.
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John JenningsOwnerCommented:
What is the make and model of your laptop, HFK-IKT?
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HFK-IKTAuthor Commented:
It is an laptop. HP 6450b.

And just to be clear. This was working before the format.
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John JenningsOwnerCommented:
and you can tell me which version of Windows 7, and whether or not it is x86 (32-bit) or x64(64-bit)??
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HFK-IKTAuthor Commented:
It is Windows 7 Professional 64-bit version.
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John JenningsOwnerCommented:
Have you downloaded the latest drivers for IDT from HP's website?

This the english language URL direct to the driver for your laptop.

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=321957&prodSeriesId=4173642&prodNameId=4173768&swEnvOID=4059&swLang=13&mode=2&taskId=135&swItem=ob-88561-1
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HFK-IKTAuthor Commented:
Tried to reinstall this driver now. Same problem as before.

Any other tips?
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OMC_HammerCommented:
go to Microsoft FIX. did you had a copy of system image where the drivers are properly working try to reinsall it and test
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John JenningsOwnerCommented:
I'd recommend installing/updating the Intel Chipset as well, if you haven't already.

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=4173768&prodTypeId=321957&prodSeriesId=4173642&swLang=13&taskId=135&swEnvOID=4059#11394

Pick it out of the list, under Driver - Chipset.
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HFK-IKTAuthor Commented:
Yeah. I have reinstalled the latest chipset drivers aswell. I have the old drive with the old drivers on. Wich files should I copy?
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John JenningsOwnerCommented:
If you go to Device Manager, is there anything in there with a question mark on it?
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HFK-IKTAuthor Commented:
No, every device has a driver installed.
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John JenningsOwnerCommented:
That's really strange. What happens if you install the old one and then upgrade to the new one? Do you lose functionality again?
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HFK-IKTAuthor Commented:
Installed an old driver.
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