Apple's line of MacBook Pro laptops was intended for the professional and power users. The MacBook Pro line includes the MacBook Pro 13" Unibody, MacBook Pro 15", MacBook Pro 15" Unibody, MacBook Pro 17", and the MacBook Pro 17" Unibody.

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Why won't my MacBook Pro switch on?

Last night, my Macbook Pro (Early 2011 Edition) switched off suddenly and will now not turn back on.

If I press the power button on it's own, nothing happens. If I reset the CRM with ctrl-shift-option, the power kicks in for around 3-5 seconds, before cutting out.

When this happens, the fan sound is often louder than usual.

If I hold down the keys to reset the PRAM, when I get it switched on, the Mac will stay on until I let go of these keys and then switch off almost immediately.

The magsafe light is at green when plugged in. I have had my Macbook for 3 and a half years.

Can anyone point me in the right direction, before I have to take it to Apple and spend lots of money.

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Could be several reasons… corrupted HD, bad component(s).

Try a safe (shift) boot. How about a boot to repair (command-D or command-R)

These alternate startup procedures can be informative.

If this answer is acceptable please remember to return and mark it.

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