"failed to activate directx device"

I got a new computer and I'm exploring the games, but I can't get any to open.  Every time I try, I get the error message "failed to activate directx device."  When I run the diagnostic tool, there doesn't seem to be any problem....and I can't see any
options to change anything anyway.  What do I do?

Keys to the Problem "failed to activate directx device"

Hi,
In which game are you facing this issue?
 
Usually this issue causes due to corrupted or missing system files.
I would suggest you to try the following methods and check if it helps.
Method 1:
If you have done Diagnosing tool for DirectX, then check three key things that are explained in the following Microsoft article.
http://windows.microsoft.com/en-US/windows7/Diagnosing-basic-problems-with-DirectX
 
Method 2:
Update the display adapter driver and check if it helps.
Update a driver for hardware that isn't working properly:
http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly
 
Method 3:
Run System File Checker tool (SFC) scan and check if it helps.
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows 7:
http://support.microsoft.com/kb/929833
 
Hope the information is helpful.

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