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Ingridtc

macrumors newbie
Original poster
Sep 9, 2021
6
0
My MacBook Pro constantly restarts every time I turn it on and does not finish turning on, it restarts before. I need help, I don't know what to do
 

DeltaMac

macrumors G5
Jul 30, 2003
13,760
4,586
Delaware
Flip your Macbook Pro so the bottom is facing up.
Look for the model number.
It will be an A with 4 numbers, such as A1425, or A1502.
Which model number is showing?
 
Last edited by a moderator:

DeltaMac

macrumors G5
Jul 30, 2003
13,760
4,586
Delaware
Next step would be to try booting to your recovery partition. Restart, while holding Command + r
When you get to the menu screen, open the Disk Utility, and select your hard drive, then try First Aid.
If that reports no problem, try reinstalling your macOS system. That's one of the choices on that menu screen.

If that does not help, I suspect that your hard drive is probably failing, and you will probably need to replace your hard drive.
 
Last edited by a moderator:

Fishrrman

macrumors Penryn
Feb 20, 2009
29,248
13,325
Further diagnosis probably isn't possible without knowing EXACTLY which MBP it is.

You can go to everymac.com and try this page:

Pay attention to this:
"Because there are 12 MacBook and MacBook Pro models that match the A1278 model number, you may wish to lookup yours by Model ID or Serial Number for greater precision."

Put in the relevant info and you can narrow down to what specific year it is.

IF it happens to be a 2012 MBP, there was a problem with the internal drive ribbon cable on these.
The cable is cheap and easy to replace... even you can do it (with the right tools, a Phillips #00 driver).
Go to ifixit.com and see how it's done.
 

Ingridtc

macrumors newbie
Original poster
Sep 9, 2021
6
0
I think it is this model:

MacBook Pro de 13 pulgadas "Core i5" 2.3 Principios de 2011
 

Ingridtc

macrumors newbie
Original poster
Sep 9, 2021
6
0
I can only start the windows section, the Mac section is the one that restarts when I turn it on
 

DeltaMac

macrumors G5
Jul 30, 2003
13,760
4,586
Delaware
Reinstall your system software by booting to the recovery system - Restart, holding Command + r
Choose "Reinstall macOS"
That will ask you to select your existing Mac boot volume. That's the destination for the install, then continue with the install. It will download the installer files, and complete the install. This might take 30 minutes to an hour to complete.
 
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