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Lanciato il 24 ottobre 2011 / processori quad-core Intel Core i7 da 2,2, 2,4 o 2,5 GHz

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MacBook goes to black screen, helppp

Hi my MacBook suddenly went to the black screen and just died. When I tried restarting it goes past the apple logo and then just stays on a white screen and won't boot up. I have to run internet recovery and do a disk utility check in order to get it too boot up (not always guaranteed this works). Eventually after a few hours the same thing happens again, black screen and then dies(even with the power pack plugged in).

I have done the following but nothing has helped

Reset smc and the prom.

Run hardware diagnostics and no faults found

Run disk utility and no issues found with hard disk.

Reinstalled macOS

When it fails and I try and boot with option +r the logo screen appears green, could it be a graphics card issue? Tried apple support but they say they don't support this. Model any more(MacBook Pro 15" mid 2011)

Any ideas and help would be much appreciated.

Thanks

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The white screen is usually caused by either a defective hard drive cable (extremely common on this model) or a failed hard drive or a combination of the two. To diagnose. get an SATA to USB 2 adapter, remove the drive and hook it up externally and see if your problem persists. Sometimes diagnostics is a process of elimination.

Don’t do or jump ahead and start buying things until we are pretty sure of what the cause is.

UPDATE

here’s how to change the cableMacBook Pro 15" Unibody Late 2011 Hard Drive/IR Sensor Cable Replacement

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Thanks I will buy the cable and try it, if the disk check said there were no hard disk issues would this not rule it out being the hard disk itself? If it is the cable is this easily replaced?

da

Look for youtube videos, Sol. There's a frigging tantalum capacitor which fails and needs to be replaced (I use alu polymer capacitors instead). The operation on this machine is not as easy as on 2010 MBPs, since the alu cap is bigger than the tantalum one and - in order to get enough space - an inductor needs to be moved as well. If you don't have a reworking station and some practice, let some technician do it for you but I assure you that's the origin of the problem and 99% of the times replacing the capacitor IS the solution. Good luck.

da

@mafomo this would be a great answer if you gave sources and some kind of "how to" to do it. Without that, it is not of much use to the average repair neophyte.

da

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I did have the same problem.To make the long story short, the problem was graphic chip (known problem with Unibody models from 2011) The good thing is that you do not need to replace the whole board, only graphic chip (cost about $ 85 plus installation).

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Sol sarà eternamente grato.
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