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Latitude E7440 Touch Screen Display goes black

Hi - my E7440 touch screen went black the other day and I've been unable to get it back. There will be times when the screen turns on, functions normally, but as soon as the PC reboots on reboot its black again. I can connect it to an external monitor and it works, also the touch screen functionality still works while connected to an external monitor. 

Does anyone have a suggestion on how to fix the display? I'd really like to be able to use this as an actual laptop again. 

Initial research came back with Fn F8 which does not work. Suggestions greatly appreciated 

thank you

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Community Manager
Community Manager

RE: Latitude E7440 Touch Screen Display goes black

Hi dtm644,

Thanks for posting.

Here is some information you may find helpful:  http://dell.to/2vFc2nU

Dell-Robert P
Social Media Support
To help us troubleshoot, please send us the Dell service tag number via a private message
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