MacBook boot not working, fans active

Question

MacBook Pro 15" Core 2 Duo Models A1226 & A1260

2.2, 2.4, 2.5, or 2.6 GHz Core 2 Duo processor

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Freek Gille @freek

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投稿日: 2014年12月23日

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MacBook boot not working, fans active

Hi all,

I have an old broken MacBook here. When I hold down the power button I do here the fans starting to turn, the hard disk unlock (or at least some sounds) like it's booting up but the screen stays black, I cant eject a disk, the shift key light can't be turned on and no boot sounds is heard. After 10 seconds the sounds die down and goes to a minimal fan speed like it's on sleep.

I've tried to boot it while holding shift and also the PRAM reset (option, cmd, p and r).

Any ideas what could fix this? Is it a common problem? Something seems to work still so I have hopes of fixing it.

Thanks!

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Can you give us a history on the machine with emphasis on any video issues or screen artifacts?

mayer さんによる2014年12月23日

@Mayer Thanks for you reply. There isn't any history of repair or previous problems. It was put into sleep in the evening and the morning after the problems started.

Freek Gille さんによる2014年12月29日

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Can you give us a history on the machine with emphasis on any video issues or screen artifacts? — mayer
@Mayer Thanks for you reply. There isn't any history of repair or previous problems. It was put into sleep in the evening and the morning after the problems started. — Freek Gille

zzz @zzz30021 評価: 7.6千 zzz 13 22 11 · Answer 1 · 2014-12-30T12:43:12-07:00

zzz @zzz30021

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zzz

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投稿日: 2014年12月30日

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0.0001% chance it is RAM, 99.9999% chance dead GPU. If this is NVIDIA replace with G84-603-A2, 128 bit, NOT cheap 64 bit remarked junk. If this is X1600 based just toss it in a bin there are no new chips for those and the old VRAM dies when you heat the board to replace the chip.

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