Back up important files
Get a USB flash drive with at least 8 GB of space
Download the Windows ISO from Microsoft
Download and open the Media Creation Tool or Rufus
Insert the USB drive into the computer
Select the USB drive in the tool
Choose the Windows ISO or let the tool create the installation media
Start the creation process and wait for it to finish
Safely eject the USB drive
Insert the USB drive into the target computer
Restart the computer
Enter the boot menu or BIOS/UEFI setup
Set the USB drive as the first boot device
Save changes and restart
Press any key when prompted to boot from USB
Select language, time, and keyboard settings
Click Install Now
Enter the product key or choose I don’t have a product key
Select the Windows edition if prompted
Accept the license terms
Choose Custom: Install Windows only
Select the drive or partition for Windows installation
Format or delete partitions if needed
Click Next to begin installation
Wait for Windows to copy files and restart
Complete the on-screen setup steps
Remove the USB drive when the computer restarts if needed
Install drivers, updates, and apps after setup