I've tried everything suggested on all forums and sites everywhere and I can't manage to fix my 2012 Macbook Pro from getting past the white startup screen.
Any ideas?
MacBook Pro 13", macOS 10.12
From Hard Drive Health Report:
ID# ATTRIBUTE_NAME VALUE WORST THRESH FAIL RAW_VALUE
5 Reallocated_Sector_Ct 100 100 005 - 1
195 Hardware_ECC_Recovered 037 037 000 - 46138904
196 Reallocated_Event_Count 100 100 000 - 1
197 Current_Pending_Sector 100 100 000 - 8
Error 9442 [1] occurred at disk power-on lifetime: 9194 hours (383 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
40 -- 51 00 08 00 00 01 d6 be 00 01 00 Error: UNC at LBA = 0x01d6be00 = 30850560
Your hard drive is failing. One bad sector has already been reallocated and 8 more are waiting to be reallocated which is causing lots of uncorrectable errors to occur which is slowing down the drive and keeping the system from booting because some of the boot files are now corrupted.
I would suggest replacing the hard drive with an SSD. If this is the 13" model, then you should also replace the internal hard drive SATA cable as this cable has an extremely high failure rate in the 13" model.
From Hard Drive Health Report:
ID# ATTRIBUTE_NAME VALUE WORST THRESH FAIL RAW_VALUE
5 Reallocated_Sector_Ct 100 100 005 - 1
195 Hardware_ECC_Recovered 037 037 000 - 46138904
196 Reallocated_Event_Count 100 100 000 - 1
197 Current_Pending_Sector 100 100 000 - 8
Error 9442 [1] occurred at disk power-on lifetime: 9194 hours (383 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
40 -- 51 00 08 00 00 01 d6 be 00 01 00 Error: UNC at LBA = 0x01d6be00 = 30850560
Your hard drive is failing. One bad sector has already been reallocated and 8 more are waiting to be reallocated which is causing lots of uncorrectable errors to occur which is slowing down the drive and keeping the system from booting because some of the boot files are now corrupted.
I would suggest replacing the hard drive with an SSD. If this is the 13" model, then you should also replace the internal hard drive SATA cable as this cable has an extremely high failure rate in the 13" model.
Did you try performing a clean install of macOS by erasing the drive when you reinstalled macOS? This option destroys all data on the drive so make sure you have good verified working backups first. If you perform a clean install, test it before migrating or restoring from a backup since migrating or restoring may just bring back the problem.
To check the health of the hard drive you can create a bootable Knoppix Linux USB drive using Etcher (Mac/Windows/Linux). Use Knoppix version 8.2 since I've had some display issues with version 8.6. Option Boot the Knoppix USB drive and select the orange icon labeled "EFI". Give Knoppix time to boot as it can seem like the computer is frozen on the Apple boot picker menu (it is some odd Apple issue).
Once Knoppix boots to the desktop, click on the "Start" menu in the lower left of the Taskbar and navigate to "System Tools --> GSmartControl". Within the GSmartControl app double-click on the icon for the internal hard drive which should open up the health report for the hard drive. Post the complete report here so I can examine it. There should also be an option to run the drive's internal self diagnostics.
It is hard to help without knowing what you have already tried.
If you have tried everything, then either you have a failing hard drive or you have a defective hard drive cable. The hard drive cable on the 13" non-Retina (mid-2012) laptop has an extremely high rate of failure.
Do you have a progress bar? If so how far does the progress bar get?
Have you tried running the Apple Diagnostics or Apple Hardware Test?
Can you boot into Safe Mode?
It depends on where you buy the cable and SSD and the size & brand of SSD. You should purchase at least a 250GB or larger SSD. A 120GB SSD is just too small.
OWC has the internal hard drive cable for some MBPro laptops:
https://eshop.macsales.com/search/?&filter.catidpath=3406/3410
Personally I prefer the Crucial MX500 SSD as it is a good drive for a reasonable price. Stay away from the Crucial BX500 since it can be as slow as a regular hard drive. Many contributors here recommend the OWC Mercury SSDs. Be careful of the really cheap SSDs as they can be very slow.
Make sure to have good verified working backups since an SSD can fail without any warning and it can be very difficult to nearly impossible to recover data from an SSD.
The progress bar slowly gets all the way to the end and then just stops.
I have tried:
-reinstalling macOS
-command + r - hardware tests with no issues.
-command, option, p & r
-shift, control & option
-tried booting into safe mode and it doesn't allow me/doesn't work.
Tried both the diagnostics and hardware tests, neither of which mentioned any issues.
Also ran a self-test and no issues were detected.
Okay, thanks for your advice.
How work it is it to replace the hard drive? It's a macbook from 2012.
How much would replacing each of them cost?
Thanks for your help!
You're welcome. Good luck.
Replacing the drive is easy and replacing the hard drive cable is just a little more difficult as you need to be careful with the delicate cable. Checkout the repair guide on iFixIt.com or the installation videos from OWC. I believe OWC sells the hard drive cable for the 13" model and maybe some of the other ones as well.
Macbook Pro stuck on startup screen (white screen with apple logo and loading bar)
