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Dolby Home Theater does not work after Windows 10 upgrade

 

Symptom

After upgrading to Windows 10, you may have symptoms below for Dolby Home Theater:

• cannot be launched
• certain features became unworkable
• the equalizer does not move
• Dolby Digital Plus feature does not work
• Missing driver message

Affected Configurations

The above symptom is associated with, but not limited to, the following systems:

• Lenovo, Idea laptops and ThinkPad 

Operating System

• Microsoft Windows 10

Solution

Step 1: Make sure your machine is supported Windows 10

Please check Lenovo Supported System List for Windows 10 Upgrade to see whether your machine is supported with Windows 10.
Note: If your machine is listed for Windows 10 upgrade, you may proceed with uninstall and reinstall the audio driver to resolve the issue. For machine is not listed, drivers have not been updated for that machine, and Lenovo does not recommended an upgrade to Windows 10.

Step 2: Uninstall and reinstall the audio driver

1. Click the bottom-left Start button on desktop, type device manager in the search box and tap Device Manager on the menu.
2. Navigate to Sound, video and game controllers, right click on Realtek High Definition Audio or Conexant SmartAudio or IDT High Definition Audio and choose Uninstall.
 3. Go to Start button, type Control Panel in the search box, and then click Programs and Features. On the list of apps, uninstall anything that relates to the Realtek/Conexant/IDT & Dolby then reboot.
4. After the reboot, go to the Lenovo Support site at http://support.lenovo.com to download new audio driver.
Note: Go to Lenovo Support Site and select your product first before proceed to download the driver.
For more information, please check on How To Navigate And Download Lenovo Softwares Or Drivers from Support Site
Users may try to uninstall and reinstall the audio driver and proceed to step 3 if the issue is still unresolved.

Step 3: Change bitrate in Playback devices

1. Right-click the sound icon in the taskbar located at the bottom right of the screen and select Playback Devices.
2. Select the current playback device in use. Double-click on it to open its properties window.
3. Click on Advanced tab.
4. Choose lower or higher bitrate (use 24bit/44100 Hz or 24bit/192000Hz – it depends on the device).