windows will install either MBR and GPT Set up the hardrive first is the easiest way if you are having trouble seeing the windows usb. Another option is to setup a duel boot usb that can boot to either setup. For example i like to have a duel setup usb drive with all the different windows, file manager and hardrive managers on etc. That way you can do everything in one go, fix your hardrive, set up in the way you want and install windows. But as already said you must download the file with the computor you are repairing if you want automatic activation.
Just my thoughts and not meant to be offencive