Hi,
The WDDM service is related to the Audio Drivers.
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You need to enable the WDDM service to get the Audio output.
Steps:
1) Press the "Windows" logo and the "R" keys on the Keyboard.
2) This will bring up the Run window.
3) Once you have it on the screen, type "services.msc" in the Run window.
4) This will open the Services window.
5) Here, you need to find a service which says "Windows Audio" or "WDDM".
6) Once you find that, double click on the particular service.
7) Then, if the service is stopped. Start the service by clicking on "Start".
8) This should start the service.
9) Once you are done with the above steps, restart the Computer.
10) Then, try playing any Music to check if there is an Audio output.
Performing the above steps should resolve the issue.
Please feel free to contact for further assistance.
Hope this helps.
Run windows update if it doesnt do any help, goto www.dell.com and to section drivers and search for your model
Windows Display Driver Model
in short WDDM is not up to date or not certified
SOURCE: when i start my laptop,
You need to set the WDDM service automatic.
please follow the below steps to set the service Automatic.
Click on Start -> Control Panel -> Administrative tools -> services
Or
Start -> Run and type in Services.msc and perss enter
Find the WDDM service on the Services window. then right click Properties go to general tab select startup type set it to AUTOMATIC then apply and restart the services.
Please check the status after restarting. Please let me know this resolve the issue you are facing, if not i can assist you further.
thanks,
Satheesh
SOURCE: Intel 915pm WDDM Driver and Windows Aero
Install your Intel 915 chipset compatible driver and Intel VGA compatible driver (for Win7)
SOURCE: My laptop always displays 'WDDM
See Microsoft answers for the posting by suresh87 on September 24, 2010 by clicking on following...
http://social.answers.microsoft.com/Forums/en-US/xphardware/thread/785044f1-708d-47c4-935a-a11ce83fbaa7
1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
16 GB available hard disk space (32-bit) or 20 GB (64-bit)
DirectX 9 graphics device with WDDM 1.0 or higher driver
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