Get a USB flash drive with at least 8 GB of free space
Back up any important files on the USB drive
Download the Windows 10 ISO file from Microsoft
Download and open the Media Creation Tool or Rufus
Insert the USB drive into your computer
Select the USB drive in the tool
Choose the Windows 10 ISO file if using Rufus
Set the partition scheme and target system if needed
Start the creation process
Wait for the tool to copy files and make the USB bootable
Safely eject the USB drive when finished
Restart the computer and boot from the USB drive