In order to resolve a MacBook, begin by determining the precise problem and take some simple troubleshooting measures. Make sure there is enough disk space, update macOS, and restart the MacBook.
To diagnose and fix disk faults, use Disk Utility. You can also reset PRAM or NVRAM to check for possible setting issues. Isolating software problems can be aided by safe boot. Use an antivirus program to look for malware. If you think there might be a hardware issue, go to an Apple Store or get expert help.