What does ‘save changes and reset’ option in BIOS actually do? – Microsoft Q&A

BIOS does not interact with your files and won’t uninstall Windows 10

See The BIOS Explained: Boot Order, Video Memory, Saving, Resets & Optimum Defaults

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What Does Save Changes and Reset Do in the BIOS?
Changes you make to BIOS settings don’t take effect immediately. To save changes, locate the Save Changes and Reset option on the Save & Exit screen. This option saves your changes then resets your computer.
There’s also a Discard Changes and Exit option. This is for if you make a mistake or decide you don’t want to change your BIOS settings at all. Just use this option to exit the BIOS setup screen without saving your changes.
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