C-media AC97 audio device, no sound

HP 7920
June 18, 2006 at 03:16:57
Specs: WinME, ..

My c-media ac97 audio device doesn't work. In the device manager it's a yellow ! and a code 10. This happened after I had done a system restore. I've tried downloading different drivers, but it doesn't help. In BIOS onboard audio it's set to enabled. All the cables are correct.. I don't know what to do, some help!

See More: C-media AC97 audio device, no sound

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June 18, 2006 at 07:13:00

I do not know how long you have had your PC ? I will tell you my exprience with AC97 onboard /intergrated sound .When I first recieved my PC ,new in 2000 a P3 750MHZ it came with AC97 intergrated sound ,and right from the start I was having problems .Sometimes sound ,most of the time no sound ? Since it was new and it came with a year of free support I was on the phone constantly with them trying to fix whatever the problem may be .Of course you where correct in making sure all of your connections are hooked up properly. Many times the support person I was dealig with would have me do some task and then reboot my PC and we would have sound ,happy that the problem was fixed untill sadly the next time I booted up again no sound ? Finally they said it must be a hardware defect and I would have had to box the PC all up and ship it back to them so they could check the motherboard and the intergrated onboard sound .A friend /neighbor of mine who is a programmer and has built his own computers a few times ,suddenly appeared at my doo with a sound card ,brand new in the box a Diamond S90 PCI .He watched as I read the instructions and installed the sound card ,disabled the onboard sound in the BIOS ,ever since I have not only had very reliable sound I have had much better quality sound ,I have aery good set of speakers very impertant if you are going for high quality sound ? Dont be afraid to try and install a sound card they are inexpensive and easy to install as long as yo can follow directions .In the end you will be better off ,as AC97 is not very good audio !
Good Luck ,Nick

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June 18, 2006 at 07:30:19

Thanks! I haven't had almost any problems before and I think it's five years old. Before I did a system restore I somehow managed to get the sound back but then something happened and it was gone again.. Also I've read in a lot of forums that others have had the same problems and then been able to fix them, but they never write how they did it.. :)
So if anyone has any suggestions..? Thanks

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June 18, 2006 at 09:43:58

Take anything Nick says with a grain of salt. He's had nothing but problems with his PC & his troubleshooting methods are horrible.

1st of all, make sure you have the correct drivers ready. Then go to Control Panel > Add/Remove & see if there's a listing for the C-Media audio...if it's there, run the unistaller. Next, boot into Safe Mode & go to Device Manager...remove ALL listings for sound. Then reboot & see if Windows sorts it all out. Have the driver ready in case you need it....

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Related Solutions

June 18, 2006 at 10:30:00

I tried doing as you said and everything worked as it should (windows found the drivers) but everything is still as it was before..?

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June 18, 2006 at 15:03:49

Go to device manager, find the listing with the yellow ! , right click & select properties...what does it say about the conflict?

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June 19, 2006 at 02:47:41

It says that the device isn't installed, isn't working correct or hasn't all the drivers installed (code 10)

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June 19, 2006 at 04:47:35

Therefore it has either packed up or you are using the wrong divers..

Does Windows Update offer an updated Driver ??

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June 19, 2006 at 07:46:28

I've tried downloading drivers from differnt pages but none of them seem to work.. I haven't found any updates from windows.

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June 19, 2006 at 08:32:39

Use Everest to ensure you are looking for the right driver....


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June 20, 2006 at 06:22:23

Yes take my advice with a "grain of salt" ,keep trying to get that AC97 working ,when 30-40 $'s about a hours worth of work and you could have been listening to a better quality sound ,that will work everytime you turn on your PC.I installed my sound card only three months after buying my P3 ,and that was over 5 years ago ,its still working great ! PCI sound card ,forget the onboard stuff, even though ,some of the newer intergrated stuff is better,so I hear ?
Again Good Luck

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June 20, 2006 at 12:58:10

Nick, I hate to be a d!ckhead, but based on the numerous posts you've made detailing your PC problems & steps you've taken to try to correct them, you shouldn't be advising anyone on how to fix their PC.

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June 21, 2006 at 06:38:56

Hi Jam ,or Dickhead which ever you prefer, read the following post in response to your comment >Name: Juie
Date: October 09, 2002 at 03:15:00 Pacific
Subject: BDE-trojan
OS: Me
CPU/Ram: no idea!
I need help! ive ran "the cleaner" millions of times it finds the trojan says it deletes it but still when i run it again its still there! norton cant find it at all, found two files which it removed. B3D killer cant find anything and i know i still have the BDE on my comp! i cant delete the files coz my comp is giving me access denied and this is driving me insane! ive worked on it for 2 days now day and nite attacking it from various of ways and i still cant get rid of it pls help!
After 3 other people gave suggestions that didnt work-NR

Name: Nick Ritchie <mailTo:plasticcovers@hotmail.com?subject=Computing.Net%20Post%20-%20security-2609> Date: October 09, 2002 at 06:30:55 Pacific Subject: BDE-trojan Reply: Have you disabled the Sysytem Restore Utility ? I know when I recieved the Klez Virus , after Norton caught the virus and I deleted it off my system . I ran a full H.D. scan and the virus was still in my Restore Utility. Following the instructions off the Norton Web site , I disabled the System Restore Utility , doing this will purge all of your restore points including the one containing the virus. After a reboot you can then go back and re-enable the utility and create a new restore point.To disable , right click on My Computer , click on the performance tab , click on file system , click on trouble shooting , put a check mark in disable system restore click OK , OK again , then reboot your PC. After you do all of this and re-enable the utility ,run a full HD scan and see if the virus is gone ! Good Luck, Nick <> Report Offensive Follow Up For Removal </cgi-bin/report.pl/security/wwwboard/forum/2609.html|3>
Response Number 4Name: maria Date: October 09, 2002 at 14:03:16 Pacific Subject: BDE-trojan Reply: thanks so much Nick!!! it worked!! its dead gone poff, yay!!! all my scanners are clean again! im so

Another post, that I supplied a fix !
When starting up Win ME, a password window comes up. I never set a password, so hitting enter or clicking ok allows the pc <http://www.computing.net/windowsme/wwwboard/forum/41911.html> to continue booting up. The problem is that it often freezes up at that point and I have to hit the off button and start over. Is there any way to stop the password window from coming up, or any other solution? My pc is a Dell

I supplied a fix that allows user to remove the password prompt! He replied thanking me !

Thanks, Nick, it works! I appreciate the info- Ken
Hey Jam ,did you read Julies raply, thanks so much Nick . I wonder if the 3 others that provided her advice on how to fix if one of them you provided .Yes as hard as it is to believe I have helped others in the past !
Have a Nice Dat ,Nick

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June 21, 2006 at 06:47:36

Sorry for my reappearing typos ! Has she been able to get that AC97 sound working again ,I hope as much as anyone else she can get it working without having to purchase a sound card ! I was just telling her my exprience with the AC97 intergrated sound on my system. They have come a long way in improving onboard graphics and sound however still AGP or PCI2 graphics will outperform, same with onboard sound, may have increased its performance however you can still do better with a add on card ! IMHO
Take Care Nick

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June 21, 2006 at 07:35:51


You may have helped a few people here & there, I'll give you that, but I'm not the only one in these forums who has issues with your "expertise".





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June 21, 2006 at 09:06:52


I went to the HP site & it appears that the board used in your Pavilion 7920 is an ASUS MEW-AM. If that's correct, it doesn't use C-Media AC97 audio...it uses Crystal AC97 audio. I suggest you open the case, locate the audio chip & find out exactly what make/model it is, then you can download the correct driver.


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June 21, 2006 at 09:32:28

Iam far from claiming to have any expertise in computing ,I only try to pass along my exprience when someone has a problem I have also had. I would never recomend any distructive or something that could possibly do more harm to someones system ! I always try to remember to let others know Iam not a PC Tech and that they should always get several opinions when it comes to a problem they may be having with their system !
Take Care Nick

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July 9, 2006 at 14:44:44

do NOT use the microsoft UPDATE if it is showing a driver update. DO NOT use any updates for hardware from microsoft, only the device manufacturer. Stop trying different drivers and find the original on disk????
then do the device manager dump of all sound card devices and reinstall.... where's the orig driver disk?

"Time is Time and it's Slippin' Away, it's Passin' Us By, You're Wonderin' Why, but It's Gone... Gone Forever My Friend and it Won't Come Again so Don't Try To Pretend You Feel Fine Killin' Time."

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July 17, 2006 at 20:09:13

just browsing the forums and found this.
if you need to know what your hardware is in your pc go and find unknowndeviceidentifier.exe this will tell you the right drivers to find in your pc, by right clicking on the item you need, it will take you to the web page, for the driver,
and yes I havent spelt the file name you need wrong (unknowndeviceidentifier.exe)
as for the bickering in this forum its not good to comment on others as people should realise that forums are helpful but to not take the first bit of advice you get , it is better to check out other forums and then make your own mind up.
regards to you all

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July 29, 2006 at 00:18:01

hi can sum1 help me plz i feel like smashing my sound card into pieces!!!!

ok...i have recently purchased a

CMEDIA 8738, sound card

mk.. and i have 5.1 surround sound its working i do get sound but.. i cant get all the ports to work??? i only have the green line in port (Front spkrs) and black (rear spkrs) but not orange (center spkr) or pink (mic) or blue (headphones) sumbody plz help me?@?@?@?@?@ much appreciated

b ron

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August 3, 2006 at 02:02:20

I had the same problem running Windows Xp. I got downloaded UDI unknowndeviceidentifier.exe - ran that and found the C-Media AC97 wanted Realtek driver not the one Windows had installed. My Motherboard disk had a variety of sound drivers and installing the Realtek one gave me sound back.


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August 5, 2006 at 20:42:10

I picked up a system from a client who called and said their sound did not work. In addition to a slew of other issues that prompted me to F10 and reinstall fresh from the system partition there was the same bang on the sound card. After the complete restore the sound card reinitialized and worked until Windows update indicated that is found a newer driver. Downloading and installing this driver caused the bang to reappear. No Conflicts Dick! It just would not start. Rolling back the driver to the original solved the problem again. The windows driver is a POS. Nothing to do with poor TS skills. Contacting HP to obtain a single download for this card will solve the problem as well. The real problem is that the AC97 card was flashed with proprietary Realtek software when it was repackaged for HP!

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