No sound playing through on-board speakers or from headphones when plugged in

These are analog speakers and do not need a driver. First, make sure they're plugged into the speaker/headphone jack and not the microphone jack. Second, make sure the computer's sound output is enabled and set the headphone/speaker jack. Third, verify that the sound output is working by plugging in a headphone set or a different pair of speakers. If the computer sound checks out, the speaker cable is bad or the power supply is not working.

I presume you are playing a stereo cd. Plug some other device, like headphones in to see if the computer is putting out stereo. Use the same plug as the speaker system is plugged into.
I presume you have swapped the speakers to test them.
If the speakers work, and the headphones work, it's the amp.

This is the normal way for this laptop ..leave it always with the headphones on selected in that list ..cause if the main speakers don't work well there is no point in using them ..This way you will run whatever yo will plug in ..speakers or headphones..The only setting difference in headphones and stereo out ..is that for headphones will but the speakers of the laptop when plugged in ..This way it will even help you if the speakers are making weird noises cause they are damaged ..

Try following solutions, if it works for you

To switch between speakers and headphones on Firefox,
make sure your headphones are plugged in first,
Right click on volume on the bottom right corner of your screen,
Then select Volume Mixer,
then double click on System sounds,
Click on the playback tab,
then you could switch between speakers or headphones, just select one and click "set default" and OK
only sounds in firefox will play in the headphones,
and windows media player will play on the speakers

You could leave your windows media player to play on the speakers while you listen to firefox videos in the headphones

If you want the media music player to play in your headphones also;
You have to change it in the media player program,
go to options on the media player, then look for playback devices, there should be 2 options speakers and headphones,
just pick one

I usually set the firefox audio to my headphones,
and a media player to the speakers

Please rate & vote if you like solution...

Thanks

Goto tv menu goto OPTION go to output select press the button pick Variable for outter speakers sound for input speakers or headphones.

Try here:http://www.computing.net/answers/windows- xp/headphones-amp-speakers-switching/55486.html Also:http://www.vistaheads.com/forums/microsoft-public-windows-vista-music-pictures-video/133605-sound-doesnt-switch-automatically-headphones-when-plugged.html Also:http://www.vistax64.com/sound-audio/198039-sound-doesnt-switch-speakers-headphones.html scroll down the page for the discussion.

Go to the icon tray and double click the speaker icon. Have a look in the Advanced controls to see if you have taken the mute off the pc speaker. There might also be an option to play sound on the pc speaker simultaneously with the headphones. If so, uncheck the dual play box so the sound will not play through the pc speaker when you have the headphones plugged in.

It sounds like you have a break in your cord right where it joins the plug. You will either have to replace the plug or buy new headphones.

Hello Again,

When you Plug in HeadPhones into the Laptop the Sound Playing should automatically Bi-Pass the Speakers and go Straight to the Headphones

-Unless there is a Faulty Input for the Speaker/ Headphone, Try Pushing in the Headphones More to see if the Speakers Turn Off

Hope this Works --P3NGYJ03

Believe it or not, not all speaker plugs, even if they are of the same size are NOT made the same.Some times the "male" PLUG pushes into the "female" socket in such a way that it makes NO connection or does not make the right connection causing the headphones not to work.
TEST: play music that u can hear through the internal laptop speakers, and while the music is playing, plug in the headphones.
The internal speakers SHOULD cut out, and under normal conditions the music should pass through the headphones.
If the speakers cut out and the headphones don't work, your plug is damaged.
If the speakers DON'T cut out after u plug in the headphones, your plug is open.
Depending on the audio circuit, your audio amp. inside the laptop is going to get damaged.
It depends on the WAY the audio circuit was made.