Mid 2012 MacBook Pro starts only with the external hard drive

I have a MacBook 2012 mid Pro and whenever I try to start it only shows the folder with question mark flashing. But, whenever I plug in my external hard drive, it boots. I also tried selecting the boot drive and the interns don't show, but once in the external plug-in, it shows externally as Macintosh HD. I also tried to reinstall OS X but it says I can't you this player.

Thank you

While in the drive external hard, that I hope has the same operating system, can you go to utilities utilities disk-file and run a repair of the internal drive and repair permissions? You could also do the same thing in starting mode of recovery-command keys R at startup. Using the recovery disk utilities. If you can't get the internal drive to show everyone, most likely the drive is bad. Then, you will need to replace it.

Tags: Notebooks

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