- Safe mode is an alternate boot method for Windows operating systems that makes it easier to diagnose problems. The only startup programs loaded are the operating system and drivers for the mouse, keyboard, and display modes display. It is often possible to get a system to start in safe mode when it won't start normally. To start in safe mode, press the F8 key while the system is booting and select "safe mode" (or the safe mode option you want) from the menu that appears.
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