you get an error message - information appears on your screen telling you about a problem, an application closes down - a programme shuts down, your screen goes blank - your computer monitor doesn't show any information any more, you close a file without saving it first - you lose all the charges you've made, a programme freezes - the screen don't change no matter what you do, your hard disk crashes - the system that saves information on your computer suddenly stops working,

Think! B1. Module 4. Computer problems.

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