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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MacBook Pro a1278 starts up with lock symbol I don't no passwordu

purchased of craigslistit worked then died and now a lock come on screen don't no password

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Pull one of the RAM sticks. On the first reboot reset the PRAM, here's how:

http://www.macworld.com/article/2881177/...

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There are 2 possible solutions here . Contact the person you bought it from and ask for the password . or reformat it and load a new OS

https://support.apple.com/en-ca/HT204904

Hope this helps

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I see thank you a lot so if necessary how do I reformat

it

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follow the link i sent to reinstall the OS

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jimmy will be eternally grateful.
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