How can I fix that ? (Late 2015, macOS Monterey) | Unsupported Macs | Page 1

viscid flame Nov 14, 2022, 6:56 PM

#

I already created few times an USB installer, but no success.

fossil bough Nov 14, 2022, 7:26 PM

#

You may need to try a different physical usb disk

viscid flame Nov 14, 2022, 7:52 PM

#

Already tried that but no success.

viscid flame Nov 14, 2022, 7:52 PM

#

fossil bough You may need to try a different physical usb disk

Have you any other idea ?

fossil bough Nov 14, 2022, 9:15 PM

#

What are you formatting the drive as, and how big is it?

lone yoke Nov 15, 2022, 3:43 AM

#

If the issue kept on going, maybe there was something wrong with your RAM. If you could, remove some of them and try again.

viscid flame Nov 19, 2022, 9:26 PM

#

lone yoke If the issue kept on going, maybe there was something wrong with your RAM. If yo...

An Apple Diagnostic (with D key at startup) tells me an problem with ram, with an error code of PPM002

#

what should i do

fossil bough Nov 20, 2022, 10:32 PM

#

Try clearing NVRAM and re-running the diagnostic

#

https://www.macworld.com/article/224955/how-to-reset-a-macs-nvram-pram-and-smc.html

Macworld

How to reset the NVRAM, PRAM, and SMC on any Mac

If you're experiencing weird glitches with your Mac, resetting the NVRAM or SMC might help. Here's how to do it.

viscid flame Nov 21, 2022, 12:33 PM

#

fossil bough https://www.macworld.com/article/224955/how-to-reset-a-macs-nvram-pram-and-smc.h...

Already did that. Anything changed.

fossil bough Nov 21, 2022, 7:23 PM

#

Do you have an external drive you can try installing to, to rule out issues with the SSD?

viscid flame Nov 22, 2022, 1:30 PM

#

fossil bough Do you have an external drive you can try installing to, to rule out issues with...

Yup, i tried installing on an external HDD. But no success.

fossil bough Nov 22, 2022, 1:59 PM

#

Are you installing with the OCLP installer, or the one from the App Store?

viscid flame Nov 22, 2022, 9:12 PM

#

with macOS Monterey app from App Store

viscid flame Nov 22, 2022, 9:12 PM

#

fossil bough Are you installing with the OCLP installer, or the one from the App Store?

with OCLP it’s the same

fossil bough Nov 23, 2022, 4:55 PM

#

Are you able to test installing Monterey on a drive using another computer, and then booting that from the 2015 MacBook?

#

You want to try everything to rule out bad RAM because it requires a logic board replacement

#How can I fix that ? (Late 2015, macOS Monterey)