Macbook pro and three consecutive led flashes

Just in case if you have Macbook Pro, mine is 15″ from 2008, and one day it stops working or shuts itself down shortly after you’ve logged into the system, don’t panic and don’t run into the closest Apple store to buy a new one. There is probably a solution. There are other symptoms of failure, e.g. it wouldn’t boot or chime, or the display would stay black even when you could here the fans spinnig. That all doesn’t metter – I had all of these with my laptop – as the only thing that could bring you hope is the following: take a look at the front light indicator and if it flashes three times in a row then pauses for a while and then anther three flashes repeatedly then try to replace your memory DIMMs.
Frankly speaking I don’t know the root cause behind that issue but it worked for me and once I replaced my 2x2GB Kingston memory DIMMs to the stock ones (2x1GB) the problem had gone.

Hope it saves you a couple of quids.

Update.
Below is the link to the official knowledge base article that describes that.

Posted on October 12, 2012 at 1:15 am by sergeyt · Permalink
In: Apple

2 Responses

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  1. Written by saran
    on July 1, 2016 at 9:05 am
    Reply · Permalink

    i tried it and still doesn’t work. same three blinking lights.
    I fear it is the Slots!
    New mini-Apple store in town said Board is faulty and computer needs to be replaced.

    • Written by sergeyt
      on July 1, 2016 at 9:23 am
      Reply · Permalink

      Sad to hear that didn’t work for you. Hopefully you are still covered by the standard warranty or Apple Protection Plan and they would replace it free of charge.

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