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tasoton

macrumors newbie
Original poster
Oct 14, 2011
1
0
Hi All

Hoping someone with more knowledge then myself can help me work out what wrong with my 15" Macbook pro (model A1226, 2gb ram, 2.4 core 2 duo) running Lion.

Since this morning I can't boot past the grey/blue screen with the apple logo and spinning wheel. Also weird vertical lines on the screen (see attached photo).

It was fine last night when I put it to sleep but this morning when I opened the lid, the screen was black. I waited a few minutes but no change so did a hard reset by holding the power button for 5 seconds. Ever since then I've been unable to boot.

Things I have tried include:

Booting in safe mode (Holding shift) - Progress bar completes but then spinning wheel appears and eventually freezes

Resetting NVRAM / PRAM (holding Cmd, opt, p, r) - Not helped

I have tried booting from my setup disc which came with the MBP but it’s just being spat out, the disc is a bit scratched so thinking maybe it can't be read.
I have run fsck by entering single user mode and typing /sbin/fsck -fy, but also no luck.

I'm on lion and don't have an install CD, I tried booting from a snow leopard install USB but it comes up with kernel panic screen which asks me to force restart.

I have only just recently had to replace the Nvidia chipset due to a black screen and no video output, wondering if this is connected somehow or if its something completely different?

Any help would be greatly appreciated.
 

Attachments

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It's hard to tell for certain from the photo, since the lines are really faint, but at first glance, that looks like you got a bad logic board. That pattern is common on machines that fail the Graphics Processor Test.
 
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