A friend gave me a PC with ASUS P4V800D-X motherboard; but didn't have drivers CDs. I formatted the HD, forgetting to take note of the Audio/Video Device drivers that was installed, so I can download them. All of the other new software/hardware installed and are working fine on PC, apart from the Multimedia Audio Controller. There’s nothing on/in the PC to tell me the serial or model No., etc. I noticed in Device Manager – Legacy Sound, Video and game controllers are present; and in all Device Status: “The device is working properly.” I spent hours online trying to find suitable drivers/updates, but no compatible ones found.
You have to open the computer and get the model number OFF the board.
To start, it could be a defective board. But try:
Double click the speaker icon in the lower right hand of the desktop, this will bring up the mixer, or single click to bring up the volume control. Laptops: see below, third paragraph.
Check the setting of the mixer or volume control.
But in case the volume is missing, corrupted, or the audio is otherwise non-functional:
you check whichever audio was installed:
click start, click control panel, click add remove programs, look at the list...
which audio software is shown on the list? delete it, restart the computer.
now visit the motherboard manufacturer or computer manufacturer's website
look up your computer drivers by model number
download the latest audio drivers, save on the desktop...
turn the antivirus off, turn firewall off.
if you have multiple security programs installed, turn them all off
(your driver may not install if security systems are turned on)
now load your new audio driver, restart, turn the antivirus back on.
Laptops: Your volume controls may be built into the keyboard. (varies according to make and model number)
OR: your volume control may be a knob, located near the headphone jack.
Download the entire manual for your computer model from the manufacturer's website.
The manual will show you where all the keyboard audio or wireless ethernet controls are located.
But besides the manufacturer keyboard controls, you will still have software controls, as above. (first paragraph)
So if "either one of these volume controls is turned to "zero" you will have no sound. If the Mixer is turned to zero, or muted, you will have no sound.
Hmmm, better check that.