1. Download the latest version of Rufus
2. Connect your USB flash drive if you have not already.
3. Run the rufus_v###.exe file, and click/tap on Yes if prompted by UAC.
NOTE: ### = latest version number.
4. Set Rufus with the settings below: (see screenshot below step 5)
- Under Device, select the USB flash drive you want to format and use.
- Under Format Options, check Create a bootable disk using, click/tap on the browse icon to navigate to and select your 64-bit Windows 7 or Windows 8 or Windows 8.1 ISO file, and then make sure that Standard Windows installation is selected (dotted).
- Under Partition scheme and target system type, select GPT partition scheme for UEFI computer.
- Under File system, select FAT32.
- Under Cluster size, select the (Default) (ex: 16 kilobytes or 4096 bytes) it has listed.
- Under Format Options, check Quick format.
- Under Format Options, check Create extended label and icon files.
- Under New volume label, you can enter any name you like for the USB flash drive, or leave the default name.
5. When ready, click/tap on Start. (see screenshot below)
6. Click/tap on OK to confirm. (see screenshot below)
7. Rufus will now start creating the bootable UEFI USB flash drive. (see screenshot below)
8. When Rufus is “DONE”, you can close Rufus. (see screenshot below)
NOTE: It could take a little while to finish.
9. You are now ready to do a clean install of Windows 7 or Windows 8/8.1 using UEFI with your bootable UEFI USB flash drive.