Use a USB drive with at least 32 GB capacity
Back up all data on the USB drive
Download the Windows ISO from Microsoft
Download Rufus or a similar bootable USB tool
Insert the USB drive into the computer
Open the USB creation tool
Select the USB drive
Select the Windows ISO file
Choose the correct partition scheme and target system
Start the creation process
Wait for the process to finish
Safely eject the USB drive
Insert the USB into the target computer
Enter the BIOS or boot menu
Set the USB drive as the first boot device
Save and restart
Follow the Windows setup instructions
Select the USB drive as the installation destination if installing Windows to an external drive
Complete the installation
Finish setup and install drivers if needed