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windows 8 dual monitor issue

Posted on 2013-10-30
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Last Modified: 2016-11-23
My Windows 8 laptop (Dell Vostro 1520) was working OK up until now with the laptop monitor and a ASUS monitor connected via a VGA port. Tonight I pulled the monitor out of while the OS was still running to test another PC and when I plugged the monitor in the VGA port again its  not being recognized by my laptop.

My laptop can now only recognize one monitor, namely the external monitor. If I disconnect the monitor it can recognize the laptop monitor, but it shows up as "Other" in the control panel display window. When I connect the ASUS monitor it is the only monitor recognized and I am unable to set my old resolution. The display looks ugly. So I'm no longer able to use dual monitors and what ever works, works with poor resolution.

How can I trouble shoot this?

thanks!
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Question by:olmuser
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Expert Comment

by:Skyler Kincaid
ID: 39612929
Silly question but have you tried to reboot the computer yet?

If you have already done that you may need to update or re-install the display drivers.

It is currently using the NVIDIA drivers or the Intel Drivers?

If you right click on the start charm in the bottom left hand corner and select Computer Management you should be able to find the type of video adapter.
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Author Comment

by:olmuser
ID: 39613007
Yes, reconnecting the monitor didn't bring it back to my computers old state so I did try restarting a few times. Now I wonder if that led to a Windows 8 OS update, as I seem to have this Start button on my task bar which was not there before. And probably the OS update messed up with my drivers?

Thanks for asking about my drivers, as I was trying to find that I find a lot of warnings about my drivers there, see attached picture.

device drivers under computer mgmt
My audio is not working, as can be seen in the attachment. Do I download and re-install all the drivers?
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Expert Comment

by:Skyler Kincaid
ID: 39613045
You are missing the drivers for audio and video. You need to download them from this link:
ftp://ftp.dell.com/Pages/Drivers/vostro-1520.html
You need to download the intel video drivers.
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Author Comment

by:olmuser
ID: 39613220
Well, my OS is Win8 64 bit and the drivers available are only for Win 7. If I still go ahead and tried to get Win 7 64 bit driver I got a warning that I have a newer version of the driver. I'm lost!

warning message
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Author Comment

by:olmuser
ID: 39613243
Wonder what could have caused this issue?
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Accepted Solution

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Skyler Kincaid earned 500 total points
ID: 39613338
Just overwrite it with the older version. You need to get a functional driver installed because the current one is corrupt. If there is a newer one available then it will install via Windows Update. You should be able to install the Windows 7 x64 drivers so that the system will recognize the components correctly.

Windows Update will handle any newer version of any of the drivers you install. If I was you I would install the Chipset, Webcam (which may be part of the chipset driver), Audio, and Video just to make sure all your bases are cover.

Give that a try and then let me know if things are back to normal. The goal is to get rid of all the yellow exclamation marks next to the system components inside of Computer Management.
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Author Closing Comment

by:olmuser
ID: 39613408
that fixed the issue, though I don't understand, or not sure if I have the latest drivers, but my dual monitors are up and my resolution is back up to where I usually want! thanks!
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Author Comment

by:olmuser
ID: 39616340
Well, as I mentioned, I didn't fully understand what caused the issue or how installing old drivers would help but it did work for me which I have acknowledged.Should the expert venture to answer those parts, I would be happy to revisit the grade, no issues. But thanks again!
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Expert Comment

by:Skyler Kincaid
ID: 39616922
Something happened on your PC to corrupt the drivers that you had installed. That is why they all had the yellow exclamation marks next to them in the computer management console.

You should never see yellow exclamation marks in the computer management because that means a driver is missing or there is a hardware error.

Does that help?
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Author Comment

by:olmuser
ID: 39618080
Thanks xKincaidx. I am unable to change the grade now. Could the admins do it?
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Expert Comment

by:Skyler Kincaid
ID: 39618418
Yes just indicate the grade you think I deserve after completely asking your question and they should change it once reviewed.
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