Laptop display only works in safe mode

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I have a Dell M6700 running Windows 7.  It has been in a dock for a long time.  After a couple of months of storage out of the dock, it will only display using VGA drivers.  The system uses nVidia drivers for high resolution display (1920×1200).  I deleted and restored the nVidia drivers and the problem is the same.  The laptop screen is black, although I can connect it to an external display and it works fine.  A pre-boot diagnostic shows no video card problems.  Does anyone have any ideas on what might be causing this?

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It sounds like the machine is stuck in external video mode. There is normally a function key to swap monitors between internal and external (Fn F8 on a Dell).

cheers, Paul

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bwsantana

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Other problems.

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