How to install Windows 10 from USB with step by step guide?

When you're planning to install Windows 10 from a USB drive, if you don't want to lose any important files during the installation process. please back up all your important data, whether it's on an external drive, in the cloud, or whatever method you prefer. Better safe than sorry! Check Windows' minimum requirements online. You'll usually need at least a 1GHz processor, 2GB of RAM, and 20GB of free space. If you can, it's better to go above those specs for smoother performance.

When you restart your PC, hit the key that gets you into your BIOS/UEFI settings (usually F2, F10, ESC, or DEL—different for different PCs). Make sure to set the USB drive as the first boot option. Also, check if you need to turn off "Secure Boot" or switch from UEFI to Legacy Boot depending on how the USB was created