DirectX / D3D issue

[Ever]

New build, experiencing what I think is the same issue, but in two places:

Skype: webcam freezes / goes blank after 15 minutes. Does this until restart my machine.
D3D failed to create device

Diablo 3: error arises when I Tab out / background the game. Does this until I force-quit and restart the game.
D3D failed to create device.

-I have updated motherboard drivers
-I've tried different graphic card drivers
-I updated to the most recent DirectX (11) three times.
-I've run Dxdiag. Sometimes it works flawlessly, sometimes it says,"DxDiag has detected that there might be a problem accessing Direct3D the last time this was used." Then it says "DxDiag has stopped working."

So what should I do next? I can't go on like this!

Note: I did follow this guide for SSD optimization. http://www.overclock.net/t/1156654/seans-windows-7-install-optimization-guide-for-ssds-hdds

Hardware:
-Windows 7
-Asrock z77 mobo
-AMD 7850 gfx

 

[intelfan]

windows 7 32 bit or 64?

 

[serpretetsky]

I know a lot of software still uses directx9 (not sure about diablo3)

Strange as this sounds, you have to update directx9 separately from directx11 (even with windows 7,which makes no sense to me since directx9 hasn't changed since before win7, weird)

here it is the auto download https://www.microsoft.com/en-us/download/details.aspx?id=35

not sure if this will help you, but give it a whirl.

 

[lamedude]

Last DX SDK update was June '10 which is after Win7's release date so it makes sense.