No Audio output device is installed - but it is solid

Hi all

I'm using a Thinkpad T420 Windows 7 x 64. Since yesterday, I recognized the symbol small speaker in the tray has a red x and says no Audio output device is installed. It's embarrassing, because the laptop and all speakers I connected on the work of the Audio Port. Whenever I click on the symbol, it will accompany the troubleshooting but can not find any error. The problem is, that normally I adjust the sound through this symbol, but this adjustment bar will appear only the resolution of the problems.

I tried to reinstall the device, without change. I tried to install the latest driver for Lenovo, but Windows did not subsequently and went back to the previous driver version. I stop and start the Windows Audio Service, no change... ideas?

Hi Tobias,.

Thanks for posting back. I appreciate your response and efforts.

The error occurs because windows updates.

Method 1:

I suggest you to perform automatic troubleshooting on the Microsoft Web site.

Check the link below for troubleshooting:

http://Windows.Microsoft.com/en-in/Windows/Windows-Update-error-800b0100#1TC=Windows-7

Please find trouble automatic in the paragraph and click on it and it will prompt you to save or run.

Click Run and troubleshooting can resolve the error.

Method 2:

Download drivers Conexant Audio 20672 Smart HD Audio from the manufacturer's Web site.

Visit the following link to download:

http://support.Lenovo.com/us/en/downloads/ds014918

 

Method 3:

I also suggest you to reinstall the audio drivers.

You must be logged in as an administrator to perform these steps.

Enter in the right edge of the screen and then click on search.

(If you use a mouse, point to the lower right of the screen, move the mouse to the top and then click Find.)

Enter the Device Manager in the start search box and press or click on Device Manager.

In the list of the categories of material, double click or double-click the category of in that your device is located and then double click or double-click the device you want. For example, to view your video card, press or click on graphics cards and then double click or double-click the name of the video card.

Press or click on the driver tab, press or click on put updated driver and then follow the instructions. Administrator permission required (you may be prompted for an administrator password or confirm your choice).

Hope that works!

To get help, after return. We will be happy to help you.

Thank you

Tags: Windows

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