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54 posts

Master Geek
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# 174927 11-Jun-2015 08:27
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I am working on a MacBook Pro A1278

Originally I had a problem with the MacBook running exceptionally slow. It would take 30 seconds to initiate any action whether that be opening an app or just clicking on something.
The CPU was idling at around 95% all the time and the memory was much the same with occasional spikes driving use up to 100%. There were no additional apps or programs open.

I have cleaned the disc permissions to no avail, I have tried to reinstall OSX Yosemite without a disk erase. After 24 hours of slow installation I am left with a half booted MacBook which emits a chime every minute. The screen is going crazy with several pixilated lines moving through. This leads me to believe there may now be a serious hardware fault.

The hard drive is only 30% full.

Has anybody got any suggestions on where to from here and other things to try?


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Uber Geek
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  # 1322582 11-Jun-2015 08:38
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How does it go booting an o/s from USB?

Mad Scientist
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  # 1322589 11-Jun-2015 08:49
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Install windows 7?

Swype on iOS is detrimental to accurate typing. Apologies in advance.


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  # 1322594 11-Jun-2015 08:52
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Sounds like symptoms of a borked Hard Disk.

As above, does it boot to USB quickly?

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Uber Geek
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  # 1322597 11-Jun-2015 08:57
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What year is it? the model doesn't make it clear.

Some develop a problem with the HDD cable.
mine wasrunning very slow, so I replaced the cable on the recommendation of someone, I think it did help. Then I installed an SSD and its like a new machine.

Location: Dunedin


Mad Scientist
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  # 1322606 11-Jun-2015 09:07
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If it's a hard drive problem I'd definitely install an SSD. If you can afford a MacBook you can afford ssds. You get around 10x better experience compared to a spinning drive.

Swype on iOS is detrimental to accurate typing. Apologies in advance.

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  # 1322610 11-Jun-2015 09:09
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Is it one chime or three chimes every minute? if it is the later you have a problem with the RAM

Retired IT Manager. 
The views stated in my posts are my personal views and not that of any other organisation.


Using empathy takes no energy and can gain so much. Try it.



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  # 1322618 11-Jun-2015 09:14
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Looks like a video chip issue. Use the checker linked from to see whether it falls within the affected models.

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