I need a walk through: the screen is black

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  Hello

  Today, I tried to turn on my MacBook Pro, but my screen stays black. When I press the caps lock button, it turns green which I guess means he lit. I've also heard the startup chime it generally makes when you turn on. I already tried to turn it on and off several times and reset the SMC and the LANDAU... The screen is always black.

  Could someone help me please?

  Also a few minutes ago the fan has started to make noise in the macbook...

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  Shaynidw

  Hi shaynidw,

  From your description, it seems that your MacBook Pro is powered, as soon as you hear the startup chime and see the light on the keyboard.  Thus, it seems that the problem may be with your screen or the video card.

  On the screens you see when you start your Mac

  Power on

  

  When you turn on your Mac, display is off (black) and you hear a startup chime. Your Mac Initializes his BootROM and memory (RAM live). It then performs a power - on that self test (POST) and a test of BootROM. If you hear beeps or chimes at this stage, this indicates a possible hardware problem and start stops. If you add memory to your Mac, check that it is installed correctly.

  White screen

  

  After that only walking self-test is completed, your Mac sends a video signal to your connected screens. The screen may appear black or grey at this point in the boot sequence and backlight of the screen should light up. If you do not see the image appears on your screen after a few moments, try increasing the brightness of your screen. If you use an external monitor, make sure it is properly connected and turned on.

  shaynidw, if set up the brightness of your screen does not help, you have an external display (computer screen or TV) that you can attach to your MacBook Pro to test?

  In addition, you can try to start your computer in safe mode to see if you get different results.

  Try safe mode if your Mac does not end commissioning

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  Wait. You said you use external LCD and an external LCD related to this laptop.
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  __________________________________________________________

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• 520 TouchSmart all-in-One begins, but the screen is black.

  Hi all

  I had a Touchsmart 520 for 2.5 years (warranty expired it y a.5 year) and enjoy a lot of the computer.

  One day the screen flicked once, and since then, he's black.

  The computer is still active. I can turn it on and can be accessed via the network.

  The problem is that the screen.

  I ordered a new screen from ebay, but of no use. I got a new MB, but always the same question.

  I even tried to take graphics cards out there (as I thought Valentine's) and I tried to use the support of the onboard graphics, but still no use.

  So, new screen + Mo + LED backlite, the computer is running, but the screen is black.

  One to the rescue?

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  Roye

  Hello again Roee,

  Thank you for the updated information and I can actually respond directly to the question of how it is connected. You're right it's the LG 6pin cable that provides power to the converter card, while the backlight is also connected to the converter card. I am providing you with a link to the list of HP parts store the parts of your computer where you can see the part number 654251-001 - rear panel light FFC (LG 6pin) 250 mm. You will also see the part number 653864-001-23 converter card which you may need to replace.

  You can also buy the parts there, too, if you wish.

  I was unable to locate the manuals or documents that would give you clear instructions on how to properly install the BACKLIGHT, but you can follow the basic steps in reinstalling the converter card that I have set out below:

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  Step 2. Remove both screws of the card and pull the jury on the PC
  Step 4. Align the two holes on the plate with the spacers inside the unit
  Step 5. Replace the two screws of the Commission of the converter
  Step 6. Replace the connectors of power and backlight to the Board of Directors
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  Unfortunately a refresh as he said, only maintains personal records (program data), the data can be located in the "in the"Windows"folder windows.old folder normally C /: Drive, all modern apps should be kept."

  All programs of office/legacy (Chrome, Firefox, jGrasp, etc.) need to be relocated from their original sources

  Keep all of your programs, personal files (data), settings, the best option is to create a "Disk Image" - see link below for info.

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  I called AppleCare, they said I should have donee that reset a SMC and rest of the STROLLER instead of restarting it. (I'm not convinced that the man knew what he was saying because the screen was frozen at the connection). He said I should wipe my hard drive and reinstall the OS. Then if it happens again, I could call for help.

  The computer has been running a backup time machine during this period. I heard him running. The last time this happened my hard drive has failed.

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  John,

  Have you tried all troubleshooting such as resetting the PRAM or the performance of the Diagnostics of Apple? If this isn't the case, that is where I would start. If you get anywhere with either of the people, then you probably have a hardware problem that leads to a repair. If you bought AppleCare and the computer is still covered, then call them.

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  Must be the hardware problem.

  It seems that no signal can be picked up by the monitor...
  Probably the mother or any other element connected to the motherboard is defective...

  I guess its time to contact a technician if you want to solve this...