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No video output in Windows from Nvidia card when Intel HD graphics is enabled

Last response: in Graphics & Displays
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September 26, 2013 10:34:27 PM

I recently bought a Qnix 2710 monitor. I have it connected via DVI Dual-link to my GeForce GTX 670. The problem comes when I allow my computer to boot with the Intel integrated graphics (HD 4000) set to "enable" or even just "automatic." When I do this, my monitor receives a signal up until the point right before the login screen appears in Windows - then the screen goes blank. Only when I force the integrated graphics off in the UEFI will Windows always output to my display through discrete graphics. Simply not using the Intel HD graphics isn't really an option for me - I want to use the QuickSync video encoder/decoder. My older monitor, which connected via HDMI to the same Nvidia card, worked fine when Intel graphics was enabled.

Specs and info:

- Display: Qnix 2710 QHD monitor 2560x1440 @ 110Hz
- OS: Windows 8 Pro with Media Center
- Motherboard: Gigabyte Z77X-UD5H
- CPU: Intel Core i5-3570K
- GPU: EVGA GeForce GTX 670
a b C Monitor
a b Î Nvidia
September 26, 2013 11:29:28 PM

I had the same problem before with my SLI GTX 670's. I solved it by going into safe mode and uninstalling the Nvidia drivers. Then rebooting and reinstalling the drivers. I do not really know why it worked but it did. When I got done both drivers were working correctly and Windows was able to boot with the Nvidia GTX 670's. I really do not know what was going on I should not have had to do that. Also make sure in the BIOS you have PCI-E Video default.
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