Window 10 and dual screens

Hi all,
I am having a problem with getting both screens to work under windows 10.  The same scenario worked perfect using Win 7.  I performed a Windows update from 7 to 10.  The notebook being used is a Dell Inspirion 3400  with 4gb of ram and 250gb of disk.  The primary screen is the Dell notebook and the secondary screen is a Viso TV screen.  The system will only boot to the secondary screen and the primary screen is black, it is acting link use the secondary screen only.  I tried looking in the BIOS but could not find anything that might change the screens.  I went to display properties and it looks like it does not see the primary screen.  I  disconnected the Viso screen but the primary screen still comes up black.
Anyone have an idea how to troubleshoot further or a solution would be greatly appreciated.
gordoninhawaiiAsked:
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McKnifeCommented:
This would be expected if you did not install a graphics driver. Then, the system would use the "microsoft basic display adapter" which does not support dual screen setups. So open device manager and check.
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rindiCommented:
It would be good practice to not only check the video driver, but all of the PC's drivers, and install the Windows 10 versions if they are available. The most important driver that should be installed first if available, is the chipset driver.

Once you have the right driver installed, you would setup the displays within your OS, either using the driver's utility software, or right clicking on the desktop, select "Display settings", and then you can select duplicate, extend, show only on 1 or show only on 2....
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Michael-BestCommented:
If you go to Dell:
Link:
http://www.dell.com/support/home/us/en/04/product-support/product/vostro-3400/drivers

They state:
"Product not tested for Windows 10 upgrade
Dell is not testing or developing Windows 10 drivers for this product. If you choose to upgrade, some features, applications, and connected devices may not work as expected."

So the solution is there is no solution from Dell...
Hopefully a work-around will be developed soon?
Do not hold your fingers crossed expecting an update from Dell...
Good Luck
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jctcomCommented:
2 other things you can try.  While Dell may not provide the chipset drivers running windows update manually until it tells you there are no more updates available will likely download the device drivers you need.

Also you might be able to go to the chipset manufacturer's site (Nvidia or Intel?) and download the updated graphics drivers from there (Should do this after all the updates have downloaded regardless).

Carl.
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gordoninhawaiiAuthor Commented:
I am sorry to all that responded to my question and me not answering back.  The client was off island as well as myself.  He came back this weekend and I tried all of the answers to my problem.  None worked.  I also have connected with a number of people that are not connected to Experts Exchange and two of them have the same problem with no answer.  This weekend I found a display driver dated 10/15/2015 and download.  I plan to install tomorrow.   Will post results as soon as I can determine whether it worked.
Again my apologies for not getting back sooner.
Gordon
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McKnifeCommented:
So you checked in device manager and the microsoft basic display adapter was not in use but in fact correct drivers?
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gordoninhawaiiAuthor Commented:
First I would like to thank all of the above for their input.  The bottom line is this;
1.  I needed to update the BIOS to A12
2.  I needed to go to Intel and get the most current driver (6/15/2015)
All of you pointed to drivers.  When I started research on the problem I ignored updates that were prior to Win 10 gold release (7/2015).  That was a big mistake.  Sorry for not being more through.
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