MacBook Running slow

There is this very simple and highly effective way of completely clean installing your OS. My MBP mid 2012 had gotten slower than the 90s machines because of installing and uninstalling thousands of softwares, but after I did a clean install last week, it is running even faster than the time I purchased it.

I would suggest go ahead and clean install the OS that you are running and it will give you remarkable results!

Don't fall prey to the softwares that claim to speed up your Mac. They are utterly useless!

Just go through a few YouTube videos or online forums that have the procedure of Clean Install.

Congo for your new and fast MB!

This is a common problem. All you need to do is shut the computer off and plug it in to the wall. After you do that you need to hold down the left shift, option and control and the power button for 10 seconds. It should not turn on. After that you need to just turn on the computer as normal. This should fix your problems!

We would like to know what size hard drive you have and how much free space is on it.

If you click on your Hard drive icon (should be upper right hand corner of your screen), or the Finder in your Dock...when the window opens it says at the bottom how much Free Space you have on your drive.

If you go to the , click on About This Mac, click on More Info... in that window. The next window says how big your hard drive is under Hardware....click on Serial-ATA.....look under Capacity:

We need to know this cause if a hard drive is too full it slows things down and creates operational difficulties.

DALE

Why is my computer slow?

Step by Step to fix your Mac

Did you try the technique I showed you? If you did it and it did not help you, than you should try seeing if startup programs are the problem.

What Dark Magic Is This. I used the technique and it worked... 1 question how does this work?

Making this post for future reference and for others who may be having this problem:

My 8 month old Macbook Pro one day suddenly started running very slow - no clue why. It was impossible to browse the internet or use Word without extreme frustration. I found out through extensive googling that my problem was my CPU idle % was under 10% and as low as 3%. (I read online that it should never be below 80 - if it is, that means some process is draining your CPU. You can check this by going to Utilities --> System Manager --> CPU should be selected, and at the bottom of the window it shows you the percentage of idle use).

Before I figured out the specific problem, I did all of the following: verify disk permissions, reindexing Spotlight, and resetting PRAM/NVRAM as instructed by Apple (by pressing control shift option power after turning on computer but before it starts up). No luck. Once I found out the problem was CPU usage, I tried using the purge command in Terminal (Utiltiies --> Terminal --> "purge" --> enter key) according to suggestions from other users. Still no success.

The response above by AppleFixItGuy WORKED! (turn off computer, hold down ctrl shft optn power for 10 seconds, turn computer back on). I thought it wouldn't help since I'd already entered these commands while booting. But no problems thus far, 3 hours later.

I just created an account to say.. Thank you! I've been living in pain with my slow macbook for a while, and was planning to expand the RAM. This was a cheaper solution, don't know how it works, and agree with DA_BOMB1998zthat is dark magic. Well, thanks.

Awesome! Totally helped.

THANK YOU SO MUCH! I too created an account to say thank you! I was freaking out until I saw this discussion on my iPhone. I feel better that I wasn't the only one with this issue. Thank you again.

Thanks a million, I really worked on my Mac.

Worked for me too. Thanks!

I tried this. The computer turned on towards the end of the 10 seconds - should it do this or should it take a separate press of the power button alone to power up after performing this trick?

Many thanks,