Pink box in bottom corner
How to fix...
Computer screen goes black and then pink square appears in the bottom right corner before computer restarts randomly.
MacBook Pro 13″, macOS 11.3
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ciara162 Said:
"Pink box in bottom corner: How to fix...Computer screen goes black and then pink square appears in the bottom right corner before computer restarts randomly."
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Start Here: If your Mac Restarted because of a Problem - Apple Sopport
It may have overheated. If you have lots of used storage, and little free space remaining, then the hard drive is being swollen up. So, remove large files(i.e. Movies and TV Show purchases, and Virtual Machines), moving them to a backup location.