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Apple's line of laptops for professional and power users. To date, the MacBook Pro line includes 13, 14, 15, 16, and 17-inch variants, with major revisions defined by Pre-unibody(Original), unibody, Retina display, Touch Bar, and SOC (system-on-a-chip) designs.

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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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2 Comments:

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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