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Windows 10 Technical Preview Won't detect 2nd Monitor

Posted on 2015-02-11
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Last Modified: 2015-02-22
Hello,

I have a Asus G750 laptop running a nVidia 860M and Intel 4600 graphics. My machine is setup to dual boot either Win 8.1 or Win 10 Technical preview. I mostly use the laptop at home with a Samsung LED external monitor plugged into the HDMI port.

This setup works fine for Win 8.1 but Win 10 does not detect or recognize this monitor. I've tried removing and re-installing device drivers for both the nVidia and Intel graphics but no luck. Win 10 performs ok using my built in laptop display.

Any thoughts on getting this to work would be greatly appreciated!

Thank you
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Question by:jaysch
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Assisted Solution

by:Rizzle
Rizzle earned 500 total points
ID: 40604070
Just out of interest, have you tried running Windows update to see if it has an updated driver for your graphics card? have you tried a different monitor via HDMI/VGA?
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Author Comment

by:jaysch
ID: 40604206
Yes, I always run Win update after Win 10 loads just to make sure I haven't missed anything. I haven't tried a different monitor though - good idea, I'll give it a try.

Thanks
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Expert Comment

by:Rizzle
ID: 40604218
Maybe try the monitor you currently but through VGA if its available?
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Accepted Solution

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jaysch earned 0 total points
ID: 40604745
Actually, after a couple Win 10 updates and subsequent re-starts, I was prompted to install nVidia drivers for my 860M. Now the external monitor is recognized and works fine. I noticed that the diver version that it wanted to install is an earlier version compared to what is installed on the Win 8.1 side but at least it works.

Thanks for the suggestions.
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LVL 13

Expert Comment

by:Rizzle
ID: 40605087
Thats good to hear! We have a couple of clients running win10 and things seem to be quite buggy but afterall it is the tech preview.

R
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Author Comment

by:jaysch
ID: 40606190
One common thread that I see over and over again; uninstall existing device driver and re-start Win 10 to force a re-install. This and/or a Windows update is what fixed my monitor issue.
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Author Closing Comment

by:jaysch
ID: 40624034
Even though the solution was arrived outside of Expert Exchange, I appreciate Roshan Ejaz help in leading me to the correct answer.
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