So I am building a pc for the first time, and despite a large number of headaches, I've been able to get the case closed and the bios up. Unfortunately, while being able to recognize my usb (its a gorilla usb in exfat format) it doesn't seem to recognize the windows 10 iso file I downloaded from microsoft (free home version). Any ideas what's wrong? I tried changing different settings, but not sure what I'm doing wrong. I save and exit, and then hold f8 down, but nothing happens other than a black screen for a couple seconds, then goes back to bios. I have it plugged into my case usb, not a motherboard usb slot, is that a problem?