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Hi, I was having major issues with my mac. It was incredibly slow and some programs would cause the mac to freeze. I reinstalled the whole system a number of times. I now have a macbook pro that is exactly like when I bought it. I deleted almost everything off it. It runs great, when it is plugged into the charger. The battery is fully charged. The laptop will run without the charger just exceptionally slow. In addition to this, I still have the problem of some programs causing the laptop to freeze - for example chrome. Has anyone got any idea what is wrong with this please and is it fixable by myself ? Im getting a new macbook for work reasons, so i’d like to refurbish this to sell/give to someone. Thanks Ray

Get a thumb drive and prep it up as a bootable drive with your current OS. Then alter the boot drive to the thumb drive (it will take longer to come up) once its restarted go unto the thumb drives application folder > Utilities folder > Disk Utility Run it fixing your internal hard drive. Is it better now?

Once you get disk utility report (which Dan suggested) it will let you know if drive is OK. Meanwhile you can also check if drive is not fragmented. Yes it can happen to a Mac system You can free download defrag software to check if HDD is fragmented. Though chances are less, fragmentation may also cause Mac to slow down, particularly with older drive running some big applications. Chrome may also have corrupt preference files which you can delete by navigation through its folder.

I’ve listed some of the reasons below that may cause the Mac to slow down. You can follow the content below to check if these problems are causing your computer to slow down.

  1. Clean up your hard drive
  2. Update your macOS.
  3. Manage your Startup Items
  4. End processes with Activity Monitor
  5. Upgrade your hardware
  6. Use the Mac cleanup software. Such as Mac Cleaner of iMyMac
  7. Plow through your desktop items and Clean the desktop
  8. Remove extensions to make your Mac run faster
  9. Clean lots of outdated cache files
  10. Finder uses too much memory and Adjust Finder preferences 11.Animations and rich graphics are extremely resource-hungry. So cut down on animations
  11. Reset SMC to factory settings
  12. Too much temporary files in memory. So restart your Mac regularly
  13. Turn off the FileVault encryption 15.Over time, permission problems occur, causing your Mac OS X to lag, freeze and even crash. Then You can repair disk permissions.
  14. Clean up Downloads and Trash folders
  15. Clean up Preference Panes I hope the above method can help you.