Help installing Windows 10

Jamieman

Commendable
Jan 9, 2017
28
0
1,530
i recently installed windows 10 onto a usb thumb drive, i plugged it into my pc and booted it from there and all it comes up with is a black screen with a flashing underscore, i dont know what to do
 
the only reason i bought it off eBay is because i cannot download it on a mac, and if i can i dont know how i can. i really want to get this working, i put so much money and time into this and for it to just bail on me at the last minute is really heartbreaking