MacBook boot not working, fans active

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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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发帖于: 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?

由 mayer 完成的 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.

由 Freek Gille 完成的 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 声誉积分: 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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发帖于: 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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