Workable Solutions | Step-by-step Troubleshooting |
---|---|
Fix 1. Fix PRAM/NVRAM | Restart Mac > Hold Command+Option+P+R keys to turn on Mac..Full steps |
Fix 2. Reset SMC | Shut down Mac > Unplug all cables > Plug in cables back after a few minutes..Full steps |
Fix 3. Boot in Safe Mode | Start Mac > Hold 'Shift' until the login window appears > Release the key when login in window appears..Full steps |
Fix 4. Run Disk Utility | Turn of Mac > Hold Command + R keys and power Mac back up > Enter recovery mode..Full steps |
Fix 5. Reinstall macOS | Download macOS Catalina, Mojave, or Sierra > Create bootable USB > Clean install macOS..Full steps |