![replaced a1286 logic board but wont boot into os replaced a1286 logic board but wont boot into os](https://i.ytimg.com/vi/fUVoQ2xe_q0/maxresdefault.jpg)
![replaced a1286 logic board but wont boot into os replaced a1286 logic board but wont boot into os](https://i.ytimg.com/vi/31hvi-QSJXw/maxresdefault.jpg)
The chip itself cam from Crucial - I've put RAM from Crucial in my Dell, in my eMac and into another Mac and not had any problems at all, so I'd be reluctant to go for that option. Before I had the new hard drive put in I'd been running on 640Mb RAM, 512Mb of which was added some time ago, been working fine. I'd noticed posts referring to bad RAM and wondered about this. If the logic board is faulty, why would it boot into safe mode OK? I've booted it into safe mode and run fsck -y etc once more this evening, but it still stops halfway through the startup (rotating dial section) and eventually boots to blue screen with arrow in top left hand corner, but nothing else happens. I've tried zapping the PRAM too, also without noticeable effect. Sadly the iBook is way past the stage when I could get Apple to replace the logic board for free, but it's already had two of these (both done under the Apple replacement scheme - which is what the *cough* referred to above, incidentally, my original post mentioned this).
![replaced a1286 logic board but wont boot into os replaced a1286 logic board but wont boot into os](https://media.idownloadblog.com/wp-content/uploads/2018/01/iMAc-Pro-motherboard-Apple-T2-chip-iFixit-001.jpeg)
I've now got it with OS10.2.4 installed, but it still won't boot up properly. I have re-installed the original system that came with the iBook, and it will still only boot into safe mode, or what used to be extensions off (Startup + Shift key). Hi all - thanks for your input, didn't check this thread over the weekend so didn't realise people were still posting.