[TylerrMarth]

I have a Lenovo ThinkPad Y580 gaming laptop connected to my Acer monitor through VGA and my TV through HDMI, which was simultaneously running both those displays (only those displays not the laptop display) on windows 8.1 and it was working fine when I updated to windows 10. It stopped working when I reinstalled windows 10 (due to cortana not working at all). It still displays 2 displays simultaneously but it will not use my monitor and my TV like it did before, it's either one or the other with my laptop display. I know it's because the VGA port used to run off my GPU and now it's only running off of the integrated chip. I've updated all my Intel and Nvidia drivers and still can't figure it out. Ps, the GPU is still functioning, my games still play everything on high quality

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this is something that is looking like a windows 10 issue. I've seen a LOT of similar reports to what you're saying, with similar equipment. always laptops with multiple displays. sometimes it's the external monitor that works, but the built in monitor doesn't... driver updates don't SEEM to fix the issue so far

 

maybe try uninstalling the NVidia driver all together and reinstall the version that was working in windows 8?

[dsenette]

this is something that is looking like a windows 10 issue. I've seen a LOT of similar reports to what you're saying, with similar equipment. always laptops with multiple displays. sometimes it's the external monitor that works, but the built in monitor doesn't... driver updates don't SEEM to fix the issue so far

 

maybe try uninstalling the NVidia driver all together and reinstall the version that was working in windows 8?