Question about NEC LaVie S LS900/8E Notebook

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Signed drivers i have downloaded a software realty Ac97 version WDM A398. the system seems to play a sound but i cannot hear any... then i ve checked the problem... the driver is not digitally signed... can u please help me where can i find the so called DIGITALLY SIGNED DRIVER for ATI SB200 Ac97 audio driver... thanks

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You try to connect self powered extenal speakers and see how it responds. whether it works or not this suggests that the drivers could not be correct ones - where possible it is good to continue searching for correct drivers and will get back to you soon.

Posted on Dec 26, 2007


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Sigmatel STAC9750/51 audio device driver downloadable

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The Sigmatel AC97 audio driver is for Windows Vista, Windows XP or Windows 2000 (used in lots of Dell, and other brand, pc models). Technically, it is the rather long winded:

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Oct 26, 2010 | Gigabyte GA-8I845GVM-RZ Motherboard

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I don't have a sound on my laptop Compaq presario m2000,with speaker (on board),Altec Lansing

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Motherboard supporting software--sound

from this website ,,download it

Brilliant!!!  A Huge thankyou.  Even the Gigabyte site didn't make sense to me.  You have saved my bacon.  
I extracted it, ran setup, extracted the WDM driver, ran setup and VIOLA!  Sound!  Very cool.  

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No Sound on Gigabyte K8N Pro-SLI

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Oct 19, 2008 | Gigabyte GA-K8N Pro-SLI Motherboard

1 Answer


Hi zlasav, there are a few things that must be checked before checking within the system. Please check your speakers by connecting them onto another system or notebook. (Make sure they function). If you are using windows XP any version, open control panel. Once opened than open the icon, "Sound and Audio Devices". The sound & audio properties window will open. Left click the "Audio tab". Under Default device: it should show something like "AC'97". Than left click the "Voice tab". Under default device: it should show the same, AC'97. If nothing is listed than there is either a problem with your sound device driver or the AC97 may not be enabled in your bios. To check the settings in your bios. Shut down the system. Then power up the system & press the F2 key every two seconds until the bios main menu opens. Please see page 50 in your manual. Turn to page 63 & 64 make sure your, Audio device is set to [Enabled].
Open control panel & open the System icon. System properties window will open. Click once on the hardware tab, than click on the device manager button. Device Manager window will open. Scroll down to, "Sound, video and game controller". Click the "+" sign to the left of Sound, video and game controller. (If it is not all ready opened). There may be a yellow explanation point shown there. If there is, you will need to reinstall the sound driver software. Do not use the Shuttle CD to install the audio software. Left click on this link which will open Shuttle's web site to the driver download site for your MV43N motherboard.
Now create a folder on your desktop & name it AC97. Download the driver file named, (Audio Driver for MV43N (2155kB) & save it into the AC97 folder you created. The driver will be compressed & will need to be uncompressed into the AC97 folder. The compression software used by Shuttle is called Winzip. You can download Winzip for free at this site: Once Winzip is downloaded, install the program. Than uncompress the file, (Audio Driver for MV43N (2155kB), keeping it in the AC97 folder. Once that is completed it is time to reinstall the audio software from within windows device manager.
Instruction: How to install driver software from within device manager. Use the instructions above to open up device manager again.
Right click once on the yellow ! point & left click once on update driver. Windows hardware wizard will open. Click No, not at this time. Than click the next button. Another window will open. Left click once in the circle next to, Install from a list or specific location (Advanced). Than click the next button. Again, another window will open. We want to remove the green check mark next to, Search removable media (floppy, CD-ROM...). Click the green check mark once & it will go away.
Click the browse button, click the + sign next to my computer. Find you’re desktop folder AC97 & open it. Left click once on the folder named, Audio so it is high-lighted. Than click OK.
Windows will find the correct driver software & install it automatically. Once completed. Close all opened windows & restart you’re system. Test your audio. If you intend to use a mic, you will need to set this up through the Sounds audio devices within the control panel. If this does not fix your sound issue, than the onboard sound chip is defective. The only other option is to buy & add a PCI sound card in to an opened PCI slot on your motherboard.
If you have any questions or trouble just post it here.

Good luck zlasav!
Please take your time.

Sep 12, 2008 | Shuttle MV43N Motherboard

1 Answer

Computer shuts down periodically with error message

You have one of two reason for this problem. The AC97 is your sound device in your PC. When windows went to use the AC97 either the device it self is defective or the software somehow became corrupt.
Lets check the driver in your PC. Left click the start button, slide up to & open control panel, open System icon. System Properties window will open. Click the hardware tab, than click the device manager button. Scroll down to the + sign next to Sound, video and game conreoller. Do you see a yellow ! point any where? If your answer is yes than your sound device AC97 needs the driver software re-installed. You did not post the model number of your PC or the manufacture's name for your PC.
Ex: Acer, Dell, Hp ect.
Model numbers ex: Aspire E500, Inspiron 530, Pavilion a6450z ect.
With that information I can go to their web site & find your correct (possible updated) software for your AC97 sound driver.
I can guid you to the web site & have you download the driver software & save it on your PC. (untill than).
Your PC came with a manual & Cd's. You can load each cd & search for the sound driver for your AC97 sound card. Once found you can install the sound cards software for your version of windows.
If you post the requested information I will find your needed software.

If you have more questions feel free to ask.

Have a great weekend!

Mar 22, 2008 | Computers & Internet

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