Solved Sound card conflict with PC onboard sound

February 15, 2014 at 00:49:20
Specs: Windows 7
I have:

Dell Optiplex 9020 MT with i7 / 16GB / W7 64bit
Startech 7.1 Channel PCI Digital Surround Sound Card

The PC has onboard Realtech High Definition Audio

I installed the PCI card, disabled Realtech in BIOS, disabled SERR in BIOS, disabled Realtech in Windows, uninstalled Realtech in Windows, uninstalled Realtech drivers in Windows Installed latest drivers for both sound systems and a whole heap of combinations of the foregoing.

Every time I reboot my PC the Realtech device reappears in device manager and as soon as it does the PCI card stops working.

Neither Dell nor StarTech can offer any further advice and I've spent around two and a half hours on the phone to them. Does anyone out there know the answer please?


See More: Sound card conflict with PC onboard sound

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✔ Best Answer
February 15, 2014 at 12:15:23
You can theoretically have multiple sound sources. There are settings in the sound listings in Control Panel to say which device to use. You can state to use the add in card exclusively.

I suggest you try performing the operation the opposite way. Install the add in card then go to Control panel and set it as the default device. Then go into Device manager and disable the Realtek. Then shutdown and boot to the BIOS to verify the Realtek sound is disabled there.

Newer motherboards (Windows 8) have the operating system configuring hardware instead of the BIOS.

See the link below which explains this.

http://en.wikipedia.org/wiki/Unifie...



#1
February 15, 2014 at 02:26:50
If Windows is still detecting the Realtek sound device and re-installing it's drivers, you can't have disabled it properly in Device Manager.

Go back and disable it in Device Manager and make sure you click 'OK' to save the new setting. Be sure to choose "Disable", not "Uninstall"

After disabling it, it will still show in Device Manager but it will have a small red 'x' on it to show it's been disabled.

message edited by phil22


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#2
February 15, 2014 at 02:27:04
Did you save the BIOS setting when you made the changes?

Have a look in the BIOS again and check it's definitely disabled.


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#3
February 15, 2014 at 03:59:37
Sadly that is not the cause Phil22 - A Dell technician remoted onto my PC and checked that out. First I disabled it in BIOS, then I disabled it in Windows, then I uninstalled the Realtek software and finally uninstalled the device but it kept coming back!

message edited by GeoffAt


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Related Solutions

#4
February 15, 2014 at 04:00:36
Yes Peet100, I did save the BIOS settings and also went back in and checked - it was still disabled. Actually Dell BIOS settings save by default on exit.

message edited by GeoffAt


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#5
February 15, 2014 at 05:45:13
"disabled SERR in BIOS"

What is SERR? Do you have the latest BIOS installed?

http://www.manualslib.com/manual/54...


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#6
February 15, 2014 at 05:54:03
riider

It's an error checking mechanism on the Dell BIOS which the engineer from Dell said usually only needed to be disabled for problems with graphics cards but he tried disabling it as a last resort - didn't fix anything. Page 39 of the manual Table 10 Maintenance

Yes it's the latest BIOS


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#7
February 15, 2014 at 12:15:23
✔ Best Answer
You can theoretically have multiple sound sources. There are settings in the sound listings in Control Panel to say which device to use. You can state to use the add in card exclusively.

I suggest you try performing the operation the opposite way. Install the add in card then go to Control panel and set it as the default device. Then go into Device manager and disable the Realtek. Then shutdown and boot to the BIOS to verify the Realtek sound is disabled there.

Newer motherboards (Windows 8) have the operating system configuring hardware instead of the BIOS.

See the link below which explains this.

http://en.wikipedia.org/wiki/Unifie...


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#8
February 16, 2014 at 05:45:24
Hi OtheHill,

I had already tried everything in your first three paragraphs but thanks for the thoughts. I was interested in the UEFI comments - I hadn't heard of this - but my machine is running W7 and so far as I can see is totally reliant on the BIOS at boot up.

Thanks again.


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