Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem does not happen in safe mode, this means that the default settings and basic device drivers are not causing the issue. Observing Windows in safe mode enables you to narrow down the source of a problem, and can help you troubleshoot problems on your computer.
There are three different types of safe mode boot options that are available in the Advanced Boot Options.
In safe mode, Windows has reduced functionality. The task of isolating problems is easier since many non-essential components are disabled, such as sound, third-party drivers and services, non-essential Windows services, and more. Corrupt software, drivers, or the installation of poorly-configured software prevents Windows from successfully booting into normal mode.
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