Mac Start-up/freezing Fix
. Usually, when you power your Mac, you will see a Black or gray screen. However, if your Mac hangs at the gray screen, it means your computer cannot find all the files on the startup drive.
If you are facing with Freezing or Start-up issues with your MacBook; here are usually the causes:
Common Mac start-up/freeze Symptoms we support:
Software bugs and incompatibilities Not
enough system memory for applications to run Resource-intensive
applications that heavily use the CPU
Inadequate free disk space Errors in
MacBook’s App Files Applications competing for
simultaneous disk access and other resources