10 windows on Dell Latitude E6420 portable: black screen after installation

I installed windows 10 pro 64 bit on my computer dell laptop latitude e6420 (he held these windows 7 64 bit) through update online on the recommendation of Microsoft.

After that installation that it restarts and I got the logo followed dell windows 10 logo and black screen and then on my laptop.

I plugged my monitor which loaded as soon as I inserted it

I can work with the computer on my laptop with the monitor, but my laptop screen does not work.

Windows was working fine I was able to access net and tried to update all the drivers, but he showed me that all drivers are up-to-date.

I was able to run all my applications smoothly only my computer laptop screen was not working. What are the steps I should follow to make my laptop computer screen work normally back.

Hi, same problem here. I solved it in "Optimus" enable in the settings screen in the BIOS.

Tags: Dell Laptop

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