The recording sound can not detect any voice

Control Panel, Sounds, look at Recording devices (depends on the OS you are using, you didn't mention, Vista, XP, 7,8?), Mic. Your Headphones jack, when in use, will cause the internal sound to disable, depending on OS the mic setup is a bit different but you should find it in sounds, recording devices.

Dear,
Hardware troubleshooting Depending on whether you are using an internal or an external microphone, follow the steps below to see if the problem is with the hardware.Show all ' Hide allTest the internal microphoneThe internal microphone is located near the top of the notebook LCD display or near the bottom of the LCD display near the hinge. Use the following best practices to capture sound more easily.

1. Adjust the notebook screen to place the microphone in the best direction for receiving sound.
2. Click Start , enter sound in the search field and select Sound Recorder from the list.
3. Click Record and speak into the microphone. Save the file to an easily-accessible location, such as the desktop.
4. To play back the recorded sound, open the file using Windows Media Player.
5. When using the internal microphone, choose an environment without background noise.
6. If the recorded sound does not play back, continue to the next section of this document.

Test the external microphoneVerify that the microphone port and the microphone are working properly.

1. Test the microphone on a known, working portable tape recorder, another computer, or a device that accepts the microphone connector.
2. Click Start , enter sound in the search field and select Sound Recorder from the list.
3. Click Record and speak into the microphone. Save the file to an easily-accessible location, such as the desktop.
4. To play back the recorded sound, open the file using Windows Media Player.
5. If the recorded sound does not play back, continue to the next section of this document.
6. If the microphone successfully records the voice, test the record function on the computer. If the microphone does not work properly on another computer or on a tape recorder, try using a different microphone.

Set the default microphoneIf the external microphone is set as the default recording device, uninstall and reinstall the audio driver to change the default recording device to the internal microphone. The internal microphone should be the default recording device.To change the default recording device:

1. Click Start , enter device into the search field, and then select Device Manager from the list.
2. Expand the Sound, video and game controllers list.
3. Right-click the audio driver , select Uninstall from the drop-down menu, and then click OK to confirm that you want to uninstall the audio driver.
4. After the audio driver is uninstalled, click Start , enter backup into the search field, and then select HP Backup and Recovery Manager from the list.
5. Follow the on-screen instructions to reinstall the audio driver.

The internal microphone is now set as the default recording device. Basic troubleshooting
The following are some basic troubleshooting tools that you can use to restore your microphone's functionality, depending on your operating system and/or software preferences. However, it is recommended that you first run the HP Support Assistant as it can scan your current system configuration to automatically determine if your notebook requires updated software and device drivers.

You need to tell your computer which microphone / sound source to use.
In he absence of other instructions it is defaulting to the built in microphone.
Normally your sound-card software should detect a new device plugged in and ask you to confirm it. However if it is not doing so you may need to change the audio settings.
How to correct this will vary slightly depending on which operating system you are using.

Using a microphone with computer

To use any microphone with your computer you will need to enable it in control panel. The following instructions are for Windows XP but are broadly similar for Vista and Win7

Click START, CONTROL PANEL, SOUNDS & AUDIO DEVICES

Click VOICE

Now click the VOLUME button in the SOUND RECORDING BOX. Here you need to SELECT microphone as an input source for recording (as opposed to un-checking mute in the playback controls). If your webcam/ microphone is built in to the laptop there should also be a volume control called 'Internal MIC' - disable it by placing a check-mark in the mute box.

NOTE if microphone (or internal MIC) is not listed in the 2 sets of volume controls click OPTIONS, PROPERTIES on the tool-bar and place a check against microphone in the list entitled 'show the following volume controls' and then click OK.

That should be it but it is possible you may also need to turn off the microphone in the software for your web-cam.

Changes in software, settings, or drivers can cause a microphone to stop working. Before performing any of the solutions in this document, test the equipment. After testing the equipment, select the document section that applies to the issue and follow the instructions. If the microphone recently stopped working, it may be necessary to use the Microsoft System Restore feature to correct the problem. Windows Troubleshooting Windows troubleshooting can automatically fix common problems with your computer, such as audio recording. Although it may not fix every problem, it is useful to run Windows Troubleshooting first before you manually correct problems. To run Windows Troubleshooting, follow these steps.

1. Click Start , enter troubleshooting in the search field and select Troubleshooting from the list.
2. Under Hardware and Sound, click Troubleshoot audio recording and then click Next when the Recording Audio window opens.
3. Select the device you would like to troubleshoot and then click Next .

If a recommended action displays, select Apply this fix or Skip this step to continue to search for other problems. If your problem has not been resolved, continue to manually troubleshoot using the rest of this document.Test the equipment Verify that the microphone port and the microphone are working properly.

1. Test the microphone on a known, working portable tape recorder, another computer, or a device that accepts the microphone connector.
2. Click Start , enter sound in the search field and select Sound Recorder from the list.
3. Click Record and speak into the microphone. Save the file to an easily-accessible location, such as the desktop.
4. To play back the recorded sound, open the file using Windows Media Player.
5. If the recorded sound does not play back, continue to the next section of this document.
6. If the microphone successfully records the voice, test the record function on the computer. If the microphone does not work properly on another computer or on a tape recorder, try using a different microphone.

1. Right click the sound icon in the system tray
2. Click "Adjust audio properties"
3. Go to the "Voice" tab at the top
4. Ensure that a device is selected for the section "Voice Recording"--ensure the appropriate device is seleted--most likely ti will just be one option --make sure it is selected

If this is on your pc? Go to Start, Programs, Accesoories, Entertainment, Volume controle. The internal mixer will pop up, go in to options tick recording . and make sure the microphon in the box below is ticked. Then tick ok. the mixer will change in to the recording mixer. You will then see a microphone slider on the internal mixer. Make sure it is up and that the select box box below microphone is ticked.
Regards Mark

Your default recording device is still set on the built-in mic.

In Microsoft XP...
Choose Start > Settings > Control Panel and double-click the Sounds and Audio Devices tab
Select the Voice tab and choose the the appropriate item in the Voice recording Default device pop-up menu.

In Vista, choose Start> Control Panel > Sounds and click on the Recording tab.

In both instances, choose your external mic as the default.
Windows XP 1 Choose Start > Settings > Control Panel and double-click theSounds and Audio Devicescontrol panel.
2 Select the Voice tab and choose the the appropriate item in the Voice recording Default device pop-up menu.

Look down at your task bar, click on the little speaker and it will bring up a window. Uncheck "muted". Or go on your device manager(control panle, system, device manager) and find your microphone. Double click and make sure it is enabled.

The issue can occur due to corrupted drivers or incorrect settings of microphone.
I recommend you to follow the steps in the below links:

http://notebook-solutions.blogspot.com/2009_06_01_archive.html
http://www.acerpanam.com/synapse/forms/portal20.cfm?recordid=1146&formid=3390&website=AcerPanAm.com&siteid=7117&words=All&keywords=microphone&areaid

If you have corrected all the options, drivers are reinstalled or updated and if the issue still persists then follow the below steps:

Open Run and type mmsys.cpl and click on OK.
click on Test Hardware option in Voice tab and follow the onscreen instructions.
The internal microphone option should be selected when the related window appears.
You can now check if your microphone works or not.


You can see the green bar beside the Recording option which represents the working of the microphone, if you get the message that your voice is not detected click on Back and check the Internal Microphone and now the microphone should work.

Try going to the control panel,

1. click on sound's and audio device's,
2. in the sound's and audio device's propertie's box click the voice tab at the top,
3. under voice recording check to see if the internal mic is checked in the voice recording, default device box,
4. if it is click the volume box, a new box will appear that say's recording control,
5. make sure the microphone has a check in the box,
6. under microphone click the advanced tab,
7. in the advanced tab make sure the microphone boost has a check in the box,
8. go back to the sound's and audio device's propertie's box under the voice tab,
9. at the bottom of the box under voice click on test hardware,
10. on some built in microphone's you have to talk into the area where the mic is located on the laptop.
11. if it does'nt help try using the device manager to resolve the sound issue's, check to see if the device is enabled, if it is use the troubleshooting tab to see if the device has a conflict, if it's working properly it will say this device is working properly, or try using the update driver tab.