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I'm using my MacPro to try to get help to restore my System…

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I'm using my MacPro to...
I'm using my MacPro to try to get help to restore my System 10.10.5 on my disabled iMac (early 2015 model). It turns off just after the Apple logo appears on the screen, every time I try to start up. I got it to farther just now by holding down apple+option+P+R. The screen says, OS X Utilities and presents the four questions. What should I do next? BTW, "Peter" at tech support last night made an appointment for me with Genius Bar for 12;30 tomorrow at the Towson, MD Apple Store. But could we try to fix it with your help? (I'm still snowed in after last week's blizzard)
Submitted: 2 years ago.Category: Mac
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Answered in 8 minutes by:
1/27/2016
Mac Support Specialist: Ashik, Mac Technician replied 2 years ago
Ashik
Ashik, Mac Technician
Category: Mac
Satisfied Customers: 12,431
Experience: Bachelor of Computer Application (BCA), 9+ Years of Experience in troubleshooting Macs, iPhone, iPad, iPod etc
Verified

Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.

From your description, it is possible that your Mac's hard drive is failing. Issues with hard drive usually cause it to turn off automatically as it can't read the OS X properly from the hard drive. Since you are able to boot into OS X Utilities screen, that means all other components like logic board, RAM, processor etc are fine. It is just the hard drive.

First we can run Disk Utility and then we can try to reinstall the OS X and see if it works or not.

You said you are in Utilities. Click Disk Utility. In Disk Utility, select Macintosh HD (or your hard disk) in left column. Click First Aid and run it. This will fix some system files. Then close it.

Click Reinstall Mac OS X in there. Then follow the onscreen instructions to reinstall. You will not be able to reinstall if the hard drive is failed. You will get stuck at choose disk or may fail during installation. If this is an hard drive issue (if you are unable to reinstall), then I'd recommend to take it to the Apple Store and you need to get the hard drive replaced. If it is under warranty, then Apple will replace the hard drive without any cost. Or it will cost up to $200 to replace the hard drive.

Let me know how it goes.

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