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nearly every time, while I'm watching a video on YouTube, my monitor losts signal from my graphic card. Sometimes the driver is resetting, but often I got a black screen and thats it.

My System Windows 7 x64 Intel Quad-Core Q6600 NVIDIA GTS250 with currently 310.54 BETA (happens also with 306.97)

Windows is ud to date. I think that the new WDDM1.2 Driver from Microsoft is the problem, after the installation of the update, this problems appeared.

Can anyone tell me how to downgrade WDDM1.2 to WDDM1.1 or another solution?

Thanks for your help and sorry for my bad english. zeyorama

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have you tried downloading and installing the old driver? – n00b Nov 20 '12 at 23:44
Tried 296.10, doesn't work. – zeyorama Nov 20 '12 at 23:45
Win7 doesn't support WDDM 1.2, only WDDM 1.1 – magicandre1981 Nov 21 '12 at 9:45
up vote 1 down vote accepted
Control Panel > Devices and Printers

your graphics card should be listed here, right click on it and select "Properties"

click on the "Hardware" tab at the top, then select your graphics card and again click on the "Properties" button

from here select the "Driver" tab and then there should be "Driver Details", "Update Driver...", and "Roll Back Driver" buttons.

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