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ran the first aid on my macbook pro 2012. Os 10...

ran the first aid on my macbook pro 2012. Os 10.12s hard drive. As soon as it locked the boot and began, the screen went to artifacts & shut down. Then on reboot gave three beeps. I've checked my rams seating & flashed the pram & the smc. What else c

Restart with the Command and R keys held down, or try using an external drive.

 

If the computer starts up, reinstall the OS on the internal drive.

If the computer doesn’t start up, replace the RAM.

 

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最後更新：2017-09-23 13:20:19

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