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I guess the reason you clicked this question is that you thought it was the backlight issue but it is not. This problem puzzles me.

ISSUE: My display does not work.

What MacBook do I have?

Model: MacBook Pro (15-inch, Late 2011)
CPU speed: 2.2 GHz
CPU Type: Intel Core i7 (Sandy Bridge)
CPU Model: 2675QM
Cores: 4
Bus Speed: 1333 Mhz
Turbo Boost: Up to 3.3 GHz [Never manually boosted it]
Installed RAM: 8 GB (2x4GB)
RAM Type: PC3-10600 DDR3
Hard Drive: 1TB Seagate Baracuda
Display Size: 15.4-inch
Graphics Card: AMD Radeon HD 6750M and Intel HD Graphics 3000
Card Memory: 512 MB (AMD) and 384 MB (intel, shared)

Issues in my MacBook

  • GPU Failure like most of the MacBooks from this era.
  • Speaker doesn't work as I had posted a question about this before so cannot say if the chime is coming or not.
  • The backlight is doesn't seem to be the issue cause I've tried to put light through the Apple logo.
  • I've bypassed the GPU by an NVRAM tweak but when this issue started I've mistakenly reset the NVRAM so the computer won't boot to macOS.
  • Both the fans spin.
  • The CD Drive make the usual noise.
  • Since I removed the NVRAM tweak to bypass the GPU now I can't see the apple logo to verify the backlight test so I connected few Bootable pen drives and started Internet Recovery to see the Drive icon and Spinning Globe.
  • Tried Verbose Mode to see text for testing the Backlight and as always, no a luck
  • Opened up the back and removed the display connector and reinserted it and… you guessed it not luck.

With these obstacles, I can't really tell what is making this display issue. I really hoped I could give a bounty but my reputation is quite low but still, I really lost hope in this computer and as a student, I don't think I can fix this computer ever again.

closed as unclear what you're asking by IconDaemon, Steve Chambers, fsb, dwightk, Jaime Santa Cruz Apr 10 at 21:52

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    you need to ask one clearly articulated question, one. All you have here is a bunch of problems and symptoms. Ask your most pressing question ad we'll be happy to assist. – Steve Chambers Apr 10 at 18:02
  • Thanks, @SteveChambers! As the title of the question suggests my display is not working. – Karthik Srivijay Apr 11 at 3:35
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    You need to describe the exact display problem. Unclear: does the display stay dark or distorted (only the latter relates to dGPU problems[of the usual "era" kind])? Concerning the NVRAM: What happens if you just boot from SafeMode or Recovery? Please edit additional infos into the Q! – LangLangC Apr 11 at 11:29
  • One thing you could do to improve this is to separate the issues list from the things you’ve tried list. They are both mixed together and it’s a little hard to wrap my mind around. – dwightk Apr 11 at 11:56
  • Things like "Tried Verbose Mode to see text for testing the Backlight and as always, no a luck" aren't that helpful. What does "no luck" mean exactly: stays black, hangs into the boot process (but some things are visible: either the backlight alone [subtle brightness changes], the graphical logo, verbose text…) // If it doesn't stay pitch-black: how far do you get with verbose mode, RecoveryMode, or SafeMode? Describe exactly the state you arrive at. – LangLangC Apr 12 at 13:03

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