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My MacBook don't start. Is the power button? Is any password to solve this?

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A password would not prevent your Macbook from starting, so I don't think that is the issue.

There are several variables to consider when it comes to power issues with an Apple Macbook.
For one, is your battery charged where you can test it without the MagSafe adapter, to see if the Macbook will start up?
• Also, is the MagSafe Adapter itself, not frayed or damaged, is free of debris and is able to connect securely to your Macbook?

If you have checked both of these sources for powering up your Macbook and you still cannot turn your Macbook on, then that is a hardware issue.

Sources of hardware issues with your model of Apple portable notebooks are:
* The Power supply: (source of power to the main logic board in the Macbook, and connects to the MagSafe port which of course connects the MagSafe adapter into a external power source - i.e: "a wall power socket")

* The Main Logic board: the main board in your Macbook which contains all processors, RAM, audio & video ports, ethernet, USB and other ports and components-including the Power Supply.

* RAM- If your RAM (Memory) goes bad, this can also impact the start up of your Macbook
---------------------------------------------------------------------
A good way to test and see if you can start your Macbook up is to try this procedure below:

-SMC RESET-
The System Management Controller is an integrated circuit (computer chip) that is usually on the logic board of your Mac computer.

It is responsible for power management of the computer. It controls backlighting, hard disk spin down, sleep and wake, some charging aspects, trackpad control, and some input/output as it relates to the computer sleeping.

• If the computer is on, turn it off.
• Disconnect the AC adapter and remove the
computer's battery.

• Press and hold the power button for 5 seconds
and then release the button.

• Reconnect the battery and AC Adapter.

• Press the power button to restart the computer

**IF you cannot get you Macbook powered up using this SMC Reset, that means you will need to take your Macbook in to your local Apple retail store Genius bar or Apple-authorized service center to have a diagnostics performed on your Macbook.

I am sure this will help guide you in the right direction toward address this issue.
Let me know if you have more questions regarding this issue.

Thanks!

Regards,

-Mactechtrainer

Posted on Feb 01, 2010

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