Put the USB in and let it load until you get to this screen:
Once at this screen, press: (SHIFT+F10) to get a CMD window
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MAKE SURE YOU SELECT THE DRIVE YOUR INSTALLING WINDOWS TO NOT ANOTHER. In the CMD window, type in Each Command and Press <ENTER> Key as follows:
DiskPart <ENTER>
list disk <ENTER>
select disk 0 <ENTER>
clean <ENTER>
create partition primary align=1024 <ENTER>
format fs=ntfs <ENTER> (Will Take a While)
assign <ENTER>
active <ENTER>
exit <ENTER>
exit <ENTER>
After it completes, exit the INSTALL COMPLETELY and reboot.
Once you are back in, go about installing Windows just DO NOT ALLOW Windows to create a new partition, use the only one there.