Actually, Windows doesn't install to any USB items, and you would need at least 128 GB of space on it, and those kinds of flash drives are expensive. Here's what I did when I got this problem on my rig: Install Windows on a HARD disk drive or boot from a HDD that has Windows (any version) on it, and then put the disk in. If there was a file on it, then look it up on the product's website and get it. If there isn't a file or it is not important, then re-format the SSD. Go to Computer, and right click on the SSD. Go down to Format, and left click on it. Check "MS-DOS Startup Disk" IF available, and uncheck quick-format. Let it do so, and then try installing it to the SSD once it is done. If it works, you will need to keep that hard-drive in that computer even if you aren't going to be using it, because, for some reason, Windows needs the first disk it was installed on. You might want to use an old or relatively small disk. You won't have to boot from that disk once the rig is going. Hope this helps.