Run Hardware Diagnostics
Go to the Apple on the top menu
Select Shutdown...
Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
Hold down “D” key and Power On (do not release D for 10-15 seconds)
Hardware Diagnostics Runs for 3-5 minutes.
Any issues found in Hardware Diagnostics?
If so create a ticket.
Run Disk First Aid
May Require Admin credentials
Turn on your Mac and immediately press and hold these two keys: Command (⌘) and R.
Release the keys when you see an Apple logo, spinning globe, or other startup screen
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac.
Enter the requested password to continue
Startup is complete when you see the utilities window
Select Disk Utility and Click Continue
Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility.
The sidebar in Disk Utility should now show each available disk or other storage device, beginning with your startup disk. And beneath each disk you should see any containers and volumes on that disk.
For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab.
Click Run to begin checking the selected volume for errors.
- If there is no Run button, click the Repair Disk button instead.
- If the button is dimmed and you can't click it, skip this step for the disk, container, or volume you selected.
- If you're asked for a password to unlock the disk, enter your administrator password.
After Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself.