I have an E5420 runnning Windows 7 64 bit. The BIOS shows that the internal microphone is activated but it does not show up in the device manager nor does it show up when looking in the recording devices window. In the device manager there are two High Definition Audio Devices installed, but looking at the properties of them one seems to point to the right side jack (a combo jack) and the other to the left side jack which does not physically exist. There is one item in the device manager under Other devices listed as an Unknown Device.
I have gone through the troubleshooter located at
but this has not solved the problem. How can I get the internal mic to work?
The microphone for this computer model is optional. I am sending you a private message. Please respond with the system Service Tag and your name so that I can check the system details and assist you further. If you sure about the fact that the laptop was bought with a preinstalled microphone, then you can try the following steps: Note: Microphones do not show up in Device Manager.
If the above steps do not work, then try the following steps:
If external headsets do not work, uninstall and reinstall updated drivers:
In case you do not get prompts on the screen for instructions, then
Please reply if you have any questions.
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