MacBook Pro mid 2012 startup problems as per a thousand others.
Replaced battery and charger, it now occasionally starts up but switches off after about a minute.
I'm now exploring other potential causes - is there a way to remove the SSD and test it for malware? Aside from that, what other options are there?
[Re-Titled by Moderator]
Is it the 13" or 15" model? If it is the 15" model, then there is a possibility of a GPU failure causing the problem.
Is it the Retina or non-Retina model?
If it is a 13" non-Retina model, then the internal hard drive SATA Cable is likely at fault, or you may have a bad or incompatible SSD. The internal SATA Cable has a very high rate of failure with the 13" non-Retina model. Removing the SSD and connecting it externally to boot the laptop will give you useful information. If the SSD boots fine when connected externally, then either the internal SATA Cable is bad and/or the SSD is incompatible with this laptop.
Is it the 13" or 15" model? If it is the 15" model, then there is a possibility of a GPU failure causing the problem.
Is it the Retina or non-Retina model?
If it is a 13" non-Retina model, then the internal hard drive SATA Cable is likely at fault, or you may have a bad or incompatible SSD. The internal SATA Cable has a very high rate of failure with the 13" non-Retina model. Removing the SSD and connecting it externally to boot the laptop will give you useful information. If the SSD boots fine when connected externally, then either the internal SATA Cable is bad and/or the SSD is incompatible with this laptop.
if your issue is not already resolved by starting is Safe mode (which does a disk repair as it starts up) then you may need more work in Disk Utility.
Restart in recovery
launch Disk Utility, then use the tiny View menu to "Show all Devices".
Then select each of these in turn and do a RepairDisk/FirstAid on each item:
the physical device
the container-disk
the Volume(s)
If it completes without error, you can be assured that the Directories on all of these are working fine.
If it pauses to fix stuff, best practice is to run the same test again.
How far does it get?
do you get the chime?
do you get the solid Apple on the display?
do you get an ordinary progress bar? and extended progress bar?
Hi,
Try to start up in Safe mode if it works.
Use safe mode on your Mac – Apple Support (AU)
It doesn't help, try to resetting NVRAM as well as SMC could solve your issue.
Reset NVRAM on your Mac - Apple Support
Reset the SMC of your Mac - Apple Support
If they don't help, run Apple diagnostics if your issue is caused by hardware trouble.
Use Apple Diagnostics to test your Mac - Apple Support
If all of above don't either, you'd better take your MacBook Pro to your local retail AppleStore, Genius Bar or Apple Authorized Service Provider to be examined your MacBkko Pro there.
Genius Bar Reservation and Apple Support Options - Apple
Philip Burns Said:
"Replaced battery and charger, it now occasionally starts up but switches off after about a minute."
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Troubleshooting a Mac that Automatically Turns Off:
What to Do:
Use another computer, in the meantime, if you are taking a test. Ask a friend, or peer, if you may use theirs, if you do not have another computer handy.
Troubleshooting Power:
A. Please Clarify:
B. Try a New Charger:
If it is charing from an external device, then use a new charger:
C. A Few Links to Refer to Power:
When it opens, it gets as far as asking me the password, then there's a pause and the desktop opens and then it goes black and won't open up again.
When that doesn't happen, there's no response at all to the power button.
Now that sounds promising.
its 15”
I shall Google how to test your suggestions.
How can I remove the faulty SSD from my MacBook Pro?
