I have an asus g71gx running a realtek audio driver. I've reinstalled the driver, reinstalled a new OS, and I'm still not getting any sound out of the internal speakers, but when I plug in a headphone jack, the sound comes trough the headphones. Windows 7 Ultimate 64x

Hello you can download the driver here:

http://support.asus.com/Download.aspx?SLanguage=en&m=P5GL-MX&p=1&s=22

By selecting windows xp, and open the Audio folder, and click global for download.

The audio file needs to be unziped, before you install the driver.

Reboot after the install is done.
Update the other drivers, if any missing.

The audio file is newer present, in the xp installation file.

Good luck

right click on the red X icon select playback devices there will be a red x on the speakers right click configure them

hope this helps

try this always worked for me https://www.drivereasy.com/

First, try Windows Update (look for optional updates for hardware). If you don't find it there, check your manufacturer's website support pages. Third, try RealTex's audio codec drivers (note their disclaimer). The fourth-best option is driver-notebook-download.com's Realtek driver page. (I have not verified that site is clean, or that the driver is up to date. Use it at your own risk.)

if your computer came with a motherboard disc the sound drivers could be on it

click start control panel administrive tools computer management device manager scroll to sound video and game controllers you might see a yellow question exclamation mark? ! or a red X Right click to reinstall drivers if you don

http://downloads.guru3d.com/Realtek-HD-Audio-2.35-Driver-download-2408.html

Follow this link to download the driver. I realise that this driver isn't from Asus, but that's because this board is made for Asus by Compaq/HP.

Find the necessary Realtec drivers on the ASUS website. http://support.asus.com/download/download.aspx?SLanguage=en-us
You are looking for these:
Realtek Audio Driver V5.10.0.5473 for Windows 2000/XP/2003 and XP/2003 64bit(WHQL).
Realtek Audio Driver V5.10.0.5397 for Windows 2000/XP/XP 64bit/2003/2003 64bit(WHQL). not sure if one or both.
If you find my suggestions to be helpful, please share with us some details so that others may benefit from knowing the whole story. Thank you!

go to the support site for your motherboard, there you will get universal bus architecture device drive. Install this before you install the Audio/Sound driver.

If your audio is Realtek then you should download it from realtek site.

To download click here

On this page driver is available for all OS. You may choose as per your OS i.e. XP.

Thanks
Iqbal

Before installing the AC97 software drivers, open System than click the Hardware tab than click Device manager. Scroll down to Sound, video & game controllers. Do you see a yellow ! point? If so than your drivers do need to be reinstalled. I could send you to Asus's site but they are a bit out dated so go here for updated drivers. The first one listed under Description will do just fine.
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=14&PFid=23&Level=4&Conn=3&DownTypeID=3&GetDown=false
When you open the sound, video & game controller find AC97 & uninstall by right clicking on AC97 & uninstall. Only the AC97, leave the rest alone. Restart the PC than install the new drivers that you saved to your hard drive.
Check driver installed by opening controll panel than open Sound & Audio Device icon. Under Audio tab Realtek AC97 should be listed than click the Voice tab & the same should be listed.
Test both Audio & Mic functions. If either fail your intergrated controller could be defective. Lets hope everything works fine.
Please vote...
Asus's driver download site for your P4P800.
http://support.asus.com/download/download.aspx?SLanguage=en-us
Fill in under "Please Select the Product".
Motherboard
Socket 478
P4P800
Than click GO