|Creating a Windows installation USB is easy and fast with the right program, and Rufus is the best one I've found so far for this purpose.|
Create a Windows Install USB with Rufus
Requirements: A Windows PC, a Windows 7+ ISO file, and a 4+ GB USB driveFirst, download Rufus. It is a utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc. and is significantly faster than Unetbootin and Windows 7 USB/DVD download tool, alongside being more versatile.
Visit https://rufus.akeo.ie/ and download the top file under the Download header. It will download as an executable file and double click it to run.
Select the device you want to put the Windows ISO on, in this instance, my 64GB USB stick is my E: drive. Choose MBR partition scheme for BIOS or UEFI-CSM, this allows the USB to work with UEFI and BIOS machines (pretty much any computer made in the last 15 years). Then, most importantly, the file system must be NTFS. This is so the Windows installer works properly.
If you need an ISO (Disk Image) file of Windows 10, follow this guide.
Click on the small CD drive icon next to ISO Image and then select your ISO file.
Now click Start at the bottom of Rufus.
A prompt warning you about the destruction of data on the thumb drive will appear, and if you are okay with this, press OK.
A process that takes anywhere from one minute to ten minutes in my experience will now commence, so be patient!
You're ready to go!
If you need more help: (These are all guides from Fitzsimmons Weekly)How to Access the Boot Menu - Link
Generic Windows Installation Keys - Link
Create Windows 10 Installation Media - Link