Computer keeps freezing or crashing
A frozen computer is stressful, but there are safe ways to unstick it and stop it happening so often.
Be careful: If the computer is also very hot or shuts off by itself, it may be overheating. Turn it off and let it cool before using it again.
What to do
Step 1: Wait one or two minutes in case it's just busy.
Step 2: Press Option + Command + Esc together to open Force Quit.
Step 3: Select the app that's stuck and click Force Quit. Unsaved work in that app may be lost.
Step 4: If nothing responds at all, hold the power button for 10 seconds until it turns off, then turn it on again.
Step 5: Install updates: open System Settings, then General, then Software Update.
Step 6: Check you have free space in General, then Storage.
Still stuck? If it keeps freezing, take it to a trusted repair shop or the maker's support, as a part like the memory or drive may be failing.