Help! I lost his PC after installing the video card. The software installed its HDMI audio driver. How can I get sound on PC speakers?

To watch TV on the big screen, I installed a video card with HDMI output. (Sapphire Radeon HD6450)
The software installed its own device driver (AMD Hi definition audio) but disabled my PC speakers (and the headphone jack).
(The sound is displayed on the TV very well, via HDMI, in which I can not type)
I tried to re - activate the driver Legacy in the management of the computer, but the field enable is gray.
The PC is a hp Pavilion a1630n
It is essential for me to get a sound on my regular speakers to work on the PC.
How?

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Hello

You can check this link:

No sound in Windows

http://Windows.Microsoft.com/en-us/Windows/help/no-sound-in-Windows

Tags: Windows

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