How long have you had them in the incubator? Your egg that looks like it has a blood ring, probably does. On occasion though, the ring turns out to be an unusual formation of blood vessels. If, in the next few days, it has none of the beautiful spidery, branching red veins, it is dead.
The clears are not fertile. Sometimes it's hard to see the very first stages of life, though. I leave mine in with the other ones up to seven days, but I've never had one surprise me that was three days in when I checked it and it had nothing. If it were me and I wanted that incubator for another batch, I'd toss them at 4-5 days if no signs of life.