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)
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6. Click/tap on OK to confirm. (see screenshot below)
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7. Rufus will now start creating the bootable UEFI USB flash drive. (see screenshot below)
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8. When Rufus is “DONE”, you can close Rufus. (see screenshot below)
NOTE: It could take a little while to finish.
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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.