RealTek's latest version is 2.63, but you should make sure that your motherboard manufacturer has not done some customizing to the Realtek hardware. The best place to get the latest version for your computer is the computer or motherboard manufacturer's website.
what does realtek audio do
You should check the realtek website. All required drivers should be available there for your laptop audio device as well as any other realtek audio devices you may be using.
Computer magazines sometimes publish reviews for audio drivers, but searching Google for 'Realtek High Definition Audio Driver Reviews' or 'Realtek High Definition Audio Codec Reviews' will provide a number of websites where reviews for this specific driver can be found. One of the most respected sites is called CNet and a lot of people trust the reviews given by that site, but it would be sensible to compare reviews from other websites in order to obtain a balanced opinion.
I just solved this problem by installing the correct version of "Realtek HD Audio Driver" for windows 7. my old version of realtek hd audio driver was for win xp. I removed it, and downloaded the correct updated version for win7, then installed it. problem solved.
Realtech does not fully support SoundBlaster features.
RealTek Audio Druver
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Try the Realtek site at www {dot} realtek {dot} com {slash} download.
To play audio through your Realtek sound card, ensure that the drivers are properly installed and updated. Access the sound settings on your computer, usually found in the Control Panel or System Preferences, and select the Realtek device as the default playback device. You can then play audio from any application, and it should route through the Realtek sound card. If you're facing issues, check your audio connections and settings for any muted or disabled options.
The AC97 audio driver is not for sale it is a computer program that allows the audio hardware on the device to function. The driver can be downloaded from the Realtek website.
The file rthdcpl dot exe is an executable file associated with the Realtek audio Control Panel,
The audio and video files will be unaffected only the application software is updated to the latest version.