April 23rd, 2. What I am suggesting is to return the motherboard to the state, ‘other devices’ where the yellow exclamation marks are returned and the process begun again without the use of the updater? Log in or Sign up. JehutyZeroshift Dec 22, Further i have Realtek – real nice like the catalyst control center.

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May 6th, 5. It would have run from win95 compat anyway. The Acer AS has only one speaker. For ssound and our forum data attribution, retention and privacy policy, see here.

Right click the SMB controller with the yellow exclamation mark in Device Manager and then in the Driver tab select update driver and follow the wizard. Zcer do not link to other download sites. LauraRMay 7, In my device manager, I have an ‘unknown PCI device’ that refuses to update or reinstall any drivers.

That is a inf file driver.

Sometimes it is not necessary to update the SMBus driver especially if your computer is running okay. When I install the drivers for my bluetooth, I can select “Bluetooth audio” as my audio device No output to right laptop speaker possibly only one speaker Check your hardware specs.


Got same problem here. I uninstalled the bluetooth drivers for the moment because they seemed to be messing with my audio. Kind Regards Richard aka jeetkunedo. Right click the SMB controller.

Acer Extensa 4420 Audio Not Working!

Last edited by a moderator: Or, right click the drive in my computer, select properties, select the tools tab, and then select error checking. I now installed Ubuntu I will check to see if the SMB driver is correct and if so attach it.

Which audio drivers have you already used to install.?? If you do not notice anything wrong with the computer and it is working soune, I would forget about it, especially if the Chipset driver I linked to from Acer’s own site did not work. Does this link work for you?

If the video driver we try does not solve the problem, then you can try restoring to an earlier time. No output to right laptop speaker possibly only one speaker. No output to right laptop speaker possibly only one speaker bump. Log in or Sign up. Please assist Sm bus controller driver, Audio device on high definition audio bus,video controller vga compatible are all yellowed out exclamation marks.


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The chipset driver I linked to should work for you. Have you had any luck in getting both channels working? I wonder if it would come with as in ATI tech installation wizard. Tags for this Thread mono sound.

June 15th, 9. I would not be able to email you the vga driver as that is too big” Similar Threads – Acer Extensa I would not be able to email you the vga driver as that is too big.