You laptop graphics card will only support two monitors.
The docking station may let you choose any two of the three available, but cannot add a third monitor because the laptop's hardware cannot drive a third monitor.
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Currently my Dell Latitude laptop is connected to a Dell Pro2X docking station. Through this, I'm using two separate monitors. Is there a way that I can open my laptop and use its screen as a third monitor? I've been able to detect the third screen but cannot extend the displays across all three screens. Whenever I try, It only chooses two and leaves the third screen black. I work with a lot of different programs simultaneously and it would be much more convenient to have as many extra displays as possible. Can anyone help me? Thanks!
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You laptop graphics card will only support two monitors.
The docking station may let you choose any two of the three available, but cannot add a third monitor because the laptop's hardware cannot drive a third monitor.
Hello Kathy,
Welcome to Microsoft Community Forum.
You can easily extend your Windows desktop across more than one monitor by plugging two or more monitors into a desktop computer or one or more monitors into a laptop.
Refer to the article below and check if this helps.
Move windows between multiple monitors
http://windows.microsoft.com/en-au/windows/move-windows-between-multiple-monitors#1TC=windows-7
Also refer to the following articles:
Guided Help: Dual monitor setup is easy in Windows 7!
http://support.microsoft.com/kb/976064/en-us
Work and play better with multiple monitors
http://windows.microsoft.com/en-CA/windows7/work-and-play-better-with-multiple-monitors
Hope this information is helpful. Please do let us know if you need further assistance with Windows, we’ll be glad to assist you.
Thank you