The sound on my computer went away, The volume is on maximum.

Buy new one from eBay and follow below link

http://www.youtube.com/watch?v=7VgYVBizu3Q

Wow, go to an apple store. They will disassemble and clean what your were not able to from the outside. Good luck.

Take it to a repair shop and have the earpiece cleaned properly .

Open the "mixer" control on your computer.
Make sure that you have not "panned-100%-left"
or "panned-100%-right", i.e., your computer should be doing a '50/50' split of the sound into the two speakers.

Deliberately "pan" it away from 50/50, to see if putting "maximum" volume into one speaker,
and "minimum" volume into the other speaker, makes an audible difference.

Try the speakers in some other computer.
If it's still 100/zero, then the speakers are the problem.

The manual (you can download it here if you need a copy) shows an audio input jack right next to the VGA input connector. This jack takes a 1/8-inch stereo plug the same as the output jack on the computer. You can use the same cable that is usually supplied with computer speakers. Just plug the cable into the computer's sound output jack and the monitor input. I'd recommend setting the volume on the computer to maximum, and using the monitor volume control to adjust your sound.

Go to Device Manager and up date your drivers if this don't fix the issue. Try removing the driver and visit http://www.acer.com/worldwide/selection.html select your location.

Visit the drivers download section and download a fresh driver.

when you go to volume in the sidebar in bottom right of the screen, go to mixer and see if any of the controls like 'device' and 'windows aplications' are turned up. on my laptop, its ok sound, but when i went to the mixer, i foubd that it was only producing 20% of what it could do! Have a look and see.

OK, a few things here. First of all, what program are you using to listen to music? Some programs have an automatic volume leveling setting. If you're using Windows Media Player, it has one. Next, you should NEVER set any speaker/volume/amplifier knob to Maximum setting if you want to get any life out of your speakers. Speaker ratings are for consistent volume levels at a "clean" power level. When you turn any music source up past 80% you are pushing more distortion through the speakers that they cannot reproduce without self destructing. The human ear cannot hear this, and the volume gain is minimal. Next we'll talk about that your dealing with a combination of power levels compiling into an amplifier that may be taking in more than it can aptly amplify according to it's power multiplier scheme to increase the volume at the speaker level. If you've got everything maxed out, you're probably just pushing it all WAY too hard. All over exerted energy that is not being used productively will end up in generating heat and distortion. Those are your 2 biggest enemies when it comes to anything audio. Distortion tears voice coils and generates disruptive electrical currents, and heat destroys circuitry and components in amplifiers. The times where they jump up in volume, just look at that as borrowed time until they blow. If you want louder, get a better or more powerfully rated set, and still, NEVER turn it up past 80% if you want it to last.

Hi Sammantha78,

I had a similar problem with my computer and I went and bought new sound card and installed it and I still had no sound. I then went and bought a new set of speakers and now i got sound. I suggest you test another set of speakers on your computer to see if it’s not your Altec Lansing speakers that is not working.

Sincerely,

Agent Xiong

I'm sure you went to Control Panel, opened device manager, and and checkeck for any yellow checks for your
sound, video and game controllers. If there are none, your system is go. Then go to your audio manager on control panel, and set it up for whatever speaker configuration you have. I have realtec audio manager. This step is a must for configuring—you choose whether your laptop will use its own speaks or use your external speakers—you have to turn off the internal speakers and turn on the external. Did you forget?