Using Windows USB that came with the laptop
This will restore your computer to the same state as when you unboxed it and started it up. All data and apps will be gone.
In recovery, under "Reset this PC", select get started.
This option will also reinstall Windows but it will normally keep your data and therefore keep your User Profile. Your applications will need to be re-installed.
If there is no User Profile damage, this option can work if you need to solve a major operation system corruption with your computer. If the User Profile has damage (sometimes hard to tell), then this option will not fix it.
In recovery, under "Advanced startup", select "restart now"
This option is not reinstalling anything, it is just for restarting and using options to control what things start. This can be helpful to solve some operational problems.
In recovery, under more recovery options select "Learn how to start
fresh with a clean installation of Windows".
This is really another way to state option 1 above.
Another option: Use Windows 10 Repair Install
If your machine is running but having problems, you can run a Windows 10 Repair Install. This is often much more helpful than backing up and re-installing Windows.
Go to the Media Creation Link:
Windows 10 is running, so click on the Download button (not Upgrade
Button) and select Run. If the Repair will not run as per above, use
the Download button to create a USB Windows Installation key, then run
Setup on the USB Key.
This will launch the Repair and proceed normally.
Start with the option to Keep Everything.
You can also Keep Data, or Keep Nothing. Keep Nothing is very close to
a clean install.
If Repair with Keep Everything works, it is helpful because your machine and everything you had will remain intact.
Repair keeping anything (Everything or Data only) will not fix a damaged User Profile. Keep Nothing will delete the User Profile, all apps, and all data, and is a way to reinstall Windows that is fairly easy to do.
Good Luck with this.