Just finished building my first computer today. Two of the five drives are brand new, and the other three are mine from older devices. When I booted it up for the first time, it saw that Windows was installed on one of the drives and tried to boot from it, but of course failed. Of course I realize that this was my fault for not wiping the drives beforehand, but still. I removed all but the two brand new drives and tried again, but now no matter what I do it tells me to reboot and select a proper boot device. Is there a way to fix this? I was planning on installing a more recent version of windows on one of the new drives.