HELP-AUDIO not playing out of Headphones/External Speakers!!

Monitors seldom have sound. This one of yours is little known as I am trying to find the specs on it. Sometimes they have an audio socket, but you have to run a cable to powered speakers. The data signal from a computer sound card is not amplified, it is just data.

https://www.google.com/search?q=CMV+CT-723A+specs

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That's pretty normal with built in connectors. For a workaround grab a cheap USB sound card from eBay or somewhere else. It worked for me.
High Quality External USB 2 0 3D Virtual 7 1 Channel Audio Sound Card...

Most modern computers come with internal speakers already installed, especially laptop computers.
These speakers may be sufficient if you are performing typical computer tasks, but when you play computer games, listen to music or watch movies on your computer, you may want louder and more vibrant sound.
You can achieve this by installing external speakers or headphones. These can be connected to your computer through the speaker or USB ports included on your computer.

Plug in the speakers or headphones.
If the speakers or headphones use a stereo plug, insert the plug into the speaker/headphone port normally located on the side or front of your computer.
This port is often color-coded green. If the equipment is connected using USB, locate a free USB port.
Some external speakers will also need to be plugged into a power outlet in the wall or your surge protector.
This may be all you need to do to get the speakers or headphones to work. If they do not, continue to the next step.
Open the audio settings on your computer.
From the Windows Start menu, open the Control Panel. Here you will find audio and sound settings.
Click the heading to see your sound and audio options.
Choose "Manage audio devices" in Windows 7.


Find your Playback device.
In the Playback tab, you can select your speakers and set them as the default for your system.
If you do not see your speakers or headphones, they have not been installed properly. Disconnect and reconnect them to see if it corrects the problem.

Configure your settings.
Select your device from the list and click "Configure" to test your settings.
You can adjust the volume by using the volume slider on your computer's task bar or using external controls on the speakers or headphones.


Install speakers
http://www.liutilities.com/how-to/install-speakers-to-a-computer/

Try system restore to straighten out registry to play audio..

click on Start / Control Panel / Sounds And Audio Devices

look at Speaker Settings / Advanced -- be sure it is set to your internal speakers.

the tabs across the top; go to Audio. -- be sure it is set to your sound card. For example, mine is "SoundMax Digital Audio" ... If there is another device you use that plugs into your USB, it could have stuck on "USB Codex". If it is, just put it on "NameOfSound Card" ...

Good luck, Don't be afraid to look all around inside the Sounds And Audio Devices box. And is this helped, please take a sec to rate me. Thanks!
Don

> which is fiddle when changing between speakers and headphones

Purchase a 4-foot "extension" cable -- plug its MALE end into the AUDIO-OUT from the sound-card.
Bring the FEMALE end of the cable to somewhere in front of your computer.
Bring the MALE ends of BOTH the speakers and the headphone to the same location.

Then, when it's time to "fiddle", then the plugging/unplugging is right there, in front of you, and will be much easier to do!

Cost: about $5.

That is not a software problem.
The headphones/external speakers jack socket has a switch to exclude from audio the internal speakers, when a jack plug is connected.
This is a very simple device and is not software controlled.
The fact that it has gone faulty at the same time you reinstalled the system is a coincidence.
If it does not mute when you insert headphones, all you can do is trying to play with the jack plug , inserting and pulling it out. If this does not unlock the switch, the alternative is having the jack socket replaced by a technician. This is generally an expensive repair, asthe socked is soldered on motherboard.
A cheap alternative to a proper repair is using an external USB to Audio Adapter and mute the internal audicard when using headphones.

Are they wireless speakers? You might try updating the sound card driver.

Hello,
few tv sets have extra head phone volume option but many has either way, I mean if you put head phone, speakers will be off.
I dont know the model n make of your tv set.

Double check all of your cables, but it sounds like the power supply may have died. If the sound is like a mains hum, then the power supply will need to be replaced. Is it an internal or external one ? If it's internal, are there any fuses accessible ?

Sounds obvious, but double check the speakers are all correctly plugged in, by removing and re-inserting them. Check the volume controls and and other switches too. Try plugging headphones into the audio outputs to confirm their is actually a signal present, as the speakers may be fine, but the source may be faulty or its configuration changed.