I have an hp pavilion all in one, first I got the error message(boot device not found 3f0). Also I can't get into the setup utility, but I was able to get to diagnostic options, which are very limited and none of that helped. At this point, I put the hard drive in my other pc(desktop) and was able to install windows 10, still no boot device found. Then I thought to put my desktop hard drive into the all in one, in place of the original one, after that I still got the error. I'm wondering if this could be the motherboard instead, because both hard drives seem fine. Any help greatly appreciated.