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2011 MacBook Pro 15" running slow

Chef927

Chef927

macrumors newbie
Original poster
Jul 9, 2017
3
0
Hello all,

I have an early 2011 15" MacBook Pro (a1286).
2.2GHz Intel Core i7.
I have upgraded to a sandisk SSD (256GB).
And I also upgraded to 16GB crucial DDR1333 ram.
I am running the latest version of Sierra (10.12.5).

My computer has been running slow ever since and I have tried many things to fix it. I have reset the PRAM and the SMC. I have replaced the HDD flex cable, the cable that connects the hard drive to the computer. I put the original memory back in, so I know that it's something either to do with the hard drive or maybe some other physical component.

When I turn it on, the apple logo appears right away, but takes 1-2 minutes to get to the log-in screen. And while using the computer it is extremely slow, slower than with the original hard drive. I have searched everywhere and no one seems to have the exact symptoms that I'm experiencing.

I have made sure that the boot disk is set to the SSD.

I have also gone in and fixed the kernel task issue that seems to plague these 2011 machines.

Any help! Thank you!!!
 
The only real way to determine any faults is to instal a fresh copy of MacOS. Ideally the one it came with. Seeing as you've said you've tried a few basic hardware diagnostics, start looking into the software. Chances are if it's an old machine and you haven't done it before, years of adding/removing apps has left a few errant kexts, kernels, or files on there hampering the system.
 
New_Mac_Smell said:
The only real way to determine any faults is to instal a fresh copy of MacOS. Ideally the one it came with. Seeing as you've said you've tried a few basic hardware diagnostics, start looking into the software. Chances are if it's an old machine and you haven't done it before, years of adding/removing apps has left a few errant kexts, kernels, or files on there hampering the system.
Click to expand...

I installed a fresh OS of Sierra. I downloaded it from apple. I don't have the original disk for mavericks.
I didn't clone the hard drive that I had in it. I started fresh.
 
Chef927 said:
I installed a fresh OS of Sierra. I downloaded it from apple. I don't have the original disk for mavericks.
I didn't clone the hard drive that I had in it. I started fresh.
Click to expand...

Did you look through the App Store? Assuming you've had it for 6 years you should have downloads of the OS's going back that far. Or did you start it in recovery? Should be able to download the OS from there. Sierra should be okay but it's right at the end of the supported hardware list, my 2011 got fairly slow on Sierra.
 
New_Mac_Smell said:
Did you look through the App Store? Assuming you've had it for 6 years you should have downloads of the OS's going back that far. Or did you start it in recovery? Should be able to download the OS from there. Sierra should be okay but it's right at the end of the supported hardware list, my 2011 got fairly slow on Sierra.
Click to expand...

I've owned it for 3 years so I don't have the OS back that far. Is there a way to get an older OS? I am thinking that is the problem, that Sierra is just not happy on this machine.
 
New_Mac_Smell said:
You should first look through the purchased tab of the App Store to see if you can download previous versions. During recovery, there should be the option to download the version it shipped with. Otherwise you can purchase earlier versions, check amazon/ebay or straight from Apple https://www.apple.com/shop/help/downloadable_software

This should work though http://www.macworld.co.uk/how-to/ma...ierra-el-capitan-remove-macos-sierra-3581872/
Click to expand...

Shift-Option-Command-R may reinstall an earlier version : at least according to Apple.
https://support.apple.com/en-us/HT204904
 
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