No sound output in Windows 7

Hello Stefan,

Thank you for posting in Microsoft Community.

The issue description points out to the fact that there is no sound in your head phones.

It might be the issue with the sound drivers of your computer.

I would like to know:

1. Are you getting sound from speakers?
2. Are you facing the same issue if you connect any external speakers?         
3. Are you getting Windows startup sound when you login to the computer?
4. What is the make and model of the computer?
5. Have you made any changes to the computer, prior to the issue?
6. Are you facing this issue only while playing sound on Windows Media Player?

If the issue occurs only with Windows Media Player, then I would suggest you to run Windows Media Player Settings troubleshooter:

http://windows.microsoft.com/en-US/windows7/Open-the-Windows-Media-Player-Settings-troubleshooter

I would suggest you to try the following methods:

Method 1:

Step 1: Let's make sure that your playback devices are enabled and set as default sound device.              

1. Right Click on speaker icon on your taskbar and Select Playback devices from the notification area.

A new window titled Sound should open up.

2. Right click on the blank area place a check mark on “Select Disabled Devices” and “Select Disconnected Devices”.
3. Select your speakers and headphones, Right-click on it and select enable to make sure that it is enabled.
4. Select the External Speaker and click on “Set Default” button to set it as default device.

Step 2: Try Check the status of sound card in device manager if there is any exclamation mark.

Follow the steps given:

a) Click On Start.

b) Type Device Manager in Search box and press Enter.

c) Open Device Manager.

d) Expand Sound Card and check there is any exclamation mark.

Method 2:  

Step 1: You can also try the troubleshooter to discover any connection issues that may exist, instructions are below:

Open the Playing Audio troubleshooter

http://windows.microsoft.com/en-us/windows7/Open-the-Playing-Audio-troubleshooter

Step 2: Try to run a fixit

Here is a link for running a fixit:

http://support.microsoft.com/mats/hardware\_device\_problems/en-us

Method 3: Follow the steps mentioned below in the Microsoft articles.

No sound in Windows

http://windows.microsoft.com/en-us/windows/help/no-sound-in-windows?T1=tab02

Additional information:

Tips for fixing common sound problems

http://windows.microsoft.com/en-US/windows7/Tips-for-fixing-common-sound-problems

Update a driver for hardware that isn't working properlyhttp://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly

Update drivers: recommended linkshttp://windows.microsoft.com/en-US/windows7/Update-drivers-recommended-links

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.

Thank you

1)I'm getting sound only when my speakers and headphones are plugged in the front part.

2)Yes.

3)Yes.

4)It's from a company AMC in my country and it's called AMC Premuim.It has mixed parts,most of them are from Intel,GeForce and Foxconn.

5)No.

6)No also when i listen on youtube my headphones are playing sound only on the right.

Method 1.

Step 1: They are enabled and set to default.

Step 2: There is no exclamation mark.

Method 2:

Step1/2/3: Nothing helped.

Method 3: Nothing helped.

Thank you for your reply it was helpful if you know what it is please reply.

Hello Stefan,

Thank you for the answers to the asked questions.

1. When you say, "plugged in the front part", do you mean that the headphones work when plugged in the front jack and do not work when plugged in the rear jack?
2. If this is the case, then have you tried other external speakers to work, when plugged in the rear jack?

The issue may rest with the rear jack and you may need to contact the system manufacturer for the port repair/replacement.

Hope this information helps.