Q: Problem with bootcamp without display backlight only works with hdmi output

Good morning I have this problem since I bought this macbook pro:

I upgraded to the latest version of osx Captain

I followed all instructions to clear the nvram, pram and smc

I tried it with the installation of any Microsoft OS (7,8,81. 10)

I always see the same result.

All steps of bootcamp is normally done until it is restarted and the installation of Windows starts, then the screen stops be backlit, I found that if I connect with an HDMI cable to an external display if I can see the image but only on the external display, in any case on the mac screen.

Members of apple store genius bar of my city tried but after failing to get it gave me no solution.

I really turn to these forums to try if someone can help me.

Thank you.

13.3 Mackbook Pro

Model A1502

Part MGX91Y / A

13.3 / 8GG / 512GB Flash Storage

MacBook Pro with Retina display, Mac OS X (10.7.5), Latest version

Posted on May 7, 2016 3:47 PM

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Q: Problem with bootcamp without display backlight only works with hdmi output

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by Loner T,

Loner T May 8, 2016 5:30 PM in response to CGOMEZMARTINEZ
Level 7 (23,533 points)

Safari

May 8, 2016 5:30 PM in response to CGOMEZMARTINEZ

What is the year of your 13-in Mac?

Reference - How to identify MacBook Pro models - Apple Support .
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by CGOMEZMARTINEZ,

CGOMEZMARTINEZ May 9, 2016 5:21 AM in response to Loner T
Level 1 (8 points)

Windows Software

May 9, 2016 5:21 AM in response to Loner T

Hello Loner T, thanks for your reply and your interes.
The mac is MID 2014.

Thanks.
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by Loner T,

Loner T May 9, 2016 6:31 AM in response to CGOMEZMARTINEZ
Level 7 (23,533 points)

Safari

May 9, 2016 6:31 AM in response to CGOMEZMARTINEZ

Can you choose a specific version of Windows and let us figure out why? You have an issue with the $WInPEDriver$ Intel drivers during Windows installation.

W7 requires different steps then the steps for a W8.1/W10 installation.

Do you have your Power Adapter connected when you install Windows?
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by CGOMEZMARTINEZ,

CGOMEZMARTINEZ May 9, 2016 6:48 AM in response to Loner T
Level 1 (8 points)

Windows Software

May 9, 2016 6:48 AM in response to Loner T

Good afternoon, I really tried all the windows versions, tonight prepare a glimpse of each of the installed versions and content of the USB memory.
Always perform the installation with the power cable connected and always get the same result, after partition the disk with the bootcamp assistant after restarting the non-backlit screen.
thanks for your help
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by Loner T,

Loner T May 11, 2016 4:03 AM in response to CGOMEZMARTINEZ
Level 7 (23,533 points)

Safari

May 11, 2016 4:03 AM in response to CGOMEZMARTINEZ

After you create the USB Installer using BC Assistant, can you check Bootcamp.xml on the USB and look for Product Version in that file? What type of USB media/device are you using to create the installer?
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Q: Problem with bootcamp without display backlight only works with hdmi output

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by Loner T,

by CGOMEZMARTINEZ,

by Loner T,

by CGOMEZMARTINEZ,

by Loner T,

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