Your computer’s startup disk may not have enough free disk space. To make disk space available, you can move files to another disk or an external storage device, then delete files you no longer need on the startup disk.
macOS can also help you optimize storage by storing files in the cloud and helping you identify files you no longer need.
To find out how to increase your computer’s memory, choose Apple menu > About This Mac, click Memory, then click Memory Upgrade Instructions in the lower-right corner. (Not available on all computers.)
Quit any app that isn’t compatible with your Mac. For example, an app may require a different processor or graphics card. See the documentation that came with the app for information about its system requirements.
To see what processor your computer has, choose Apple menu > About This Mac, then click Overview.
To see what graphics card your computer has, choose Apple menu > About This Mac, then click Displays. The name of the graphics card in your computer is displayed in the middle of the window.
Quit any apps you’re not using.
If you have problems with your disk, use Disk Utility to verify and try and fix any issues.
The following issues may be related to your hard disk:
- Multiple apps quit unexpectedly
- Files become corrupt
- An external drive does not operate properly
- Your computer doesn’t start up
See the Repair a disk topic in the Disk Utility User Guide.
If your Mac is still slow then take your Mac to PC Expert Services in Irvine for Diagnostics.
“Please bring in your Mac to PC Expert Services. We highly recommend not to take your PC or laptop apart if you do not know how. Please submit the drop off form at PC Expert Services and bring in your computer for further professional and correct repair.”
Slow Mac, Slow iMac, Slow MacBook, Slow MacBook Pro, Slow MacBook Air, Slow Mac mini, Slow Mac Pro