Question about ATI Diamond Multimedia Stealth RADEON HD 2400 PRO, (512 MB) PCI Express Video Card

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Radeon HD 4650 = NO audio

My HP Media Center m7658n (XP Pro) had Realtek HD Audio installed on board. After installing the ATI Radeon HD 4650, the Realtek disappeared. I tried reinstalling the Realtek drivers through HP's Application and Driver Recovery. The driver will show it has installed. I can find it in "Add or Remove Programs". However, in Device Manager, it's not there. In Control Panel, I've tried to "Add Hardware", as I've found Realtek amongst the list. This attempt begins to load the files, then the system crashes and begins to reboot.

In "Sounds and Audio Devices Properties", under the "Volume tab, it shows "No audio device". Under the "Sounds" tab, it lists "No...devices" (in gray). Under the "Voice" tab, "No...devices (in gray). Under the "Hardware" tab, there is an "Unknown Device". When I double click on it, it identifies the manufacturer as Realtek. On that tab, under "Device status", it states, "No drivers are installed for this device". Still on this tab, under "Device usage", it states "Use this device (Enable)".

When I look at the "Properties" tab, there are four multimedia devices listed. Clicking the "+" sign next to each one shows "Realtek High Definition Audio". Click on "Realtek High Definition Audio", click on "Properties", and the "Realtek High Definition Adio Properties" window opens. For each of these miultimedia devices, the Status:" indicates "Driver is enabled and functioning properly".

When I click on the "Driver" tab, it shows the "Driver Provider" is Realtek. However, when I click on "Driver details", it shows "Logitech Inc." is the provider??? I do have some Logitech products loaded on my system.

When I try to update the driver, my system crashes, and reboots automatically.

Everything worked fine until I installed the new graphics card and software. I simply was after the 1360 x 768 native resolution my new monitor called for. My monitor looks great, but my Media Center is dead in the water, as are my audio files.

Your assistance will be greatly appreciated.

Pleasanton, CA

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  • Crazi88s Dec 11, 2008

    I have the same computer and I just installed the same ATI Radeon HD 4650. Now my sound doesn't work and it can't find the audo device. I have the EXACT SAME PROBLEM. Can anyone help?

  • pk00022 Dec 16, 2008

    ATI couldn't provide me with that tidbit... so I returned the card and bought one without an audio chip...

  • Anonymous Jan 10, 2009

    I have the same problem with the Radeon 2400 pro PCIe. trying like mad to fix it.



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Uninstall the ati sound utility, these video cards have a built in high def audio chip for sound thru hdmi

Posted on Dec 15, 2008

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Go into your system bios and set it so that it doesn't automatically detect a sound card, but instead force it to only use your real-tek

Posted on Jan 05, 2010

  • janpayne Sep 27, 2010

    Thanks to perrychahil (aka his excellency) for this solution. I have been working on the no sound problem for two weeks (tried dozens of different solutions) and this fixed it instantly.



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ATI is the graphics card developer. Your motherboard has onboard audio that appears to be Realtek. You should not have an ATI sound driver... as they don't exist.

I'm assuming you're using WinXP to make thing simple. If you're using Vista, try to do the equivalent.

Since your graphics card is capable of HDMI, the problem could be that the card expects to output audio through your graphics card rather than the sound card. Check start -> Control Panel -> Sounds and audio. -> Sounds and Audio Devices /or/ Adjust Speaker Settings -- go to the Audio tab and make sure it says Realtek for output. If it shows more than one output device, set it to realtek. If it doesn't show realtek, follow the below instructions, and then double check at the end that the Output device is set to Realtek.

1>Please go to HP's site and download their Audio drivers.
2>Go to Device manager -> Sound, Video, and game controllers.
2.1> Does it have an entry saying "Realtek blah blah Audio" there? If not, what entries does it have for audio? Ignore Audio Codecs and Legacy Audio Drivers.
2.2>If there's nothing there, you need to install the drivers you downloaded. If there is something there, please continue to #3.
2.3>After installing the driver, restart computer.
2.4>Once computer is restarted, go start -> Control Panel -> Sounds and audio. -> Sounds and Audio Devices /or/ Adjust Speaker Settings. Hit the button labeled Advanced and adjust the speaker setup to whatever you have - surround sound, 5.1, quad, stereo, whatever.
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3.1> Restart computer.
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