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If you have the internet, goto my computer and right click, then goto properties, enter device manager, goto sound,video and game controllers right click on the exclamation mark or your audio driver and click update driver, use the internet option to download the driver, it takes a few minutes so be patient. once done reboot the mechine.
copy and paste the link below on the browser.....you will be redirected to compaq preasario c700 drivers page.....there you can choose the model and it will ask what operating system....if you click the operating system....you will be redirected to the drivers download page....there you can download it.....it is free of cost.....try this....it work 100%.....
My laptop model is compaq presario c754tu, I have installed Windows Vista Business, and the audio is working fine, but the internal mic and external microphone both work together........i want to mute the internal mic..... how i can do it ? please reply me on my email id i.e. email@example.com
5 in 1 card reader driver:
HP Quick Launch Buttons
To install audio / modem drivers, first download and install Microsoft
Universal Audio Architecture (UAA) Bus Driver for High Definition Audio