Is there a reason you took it out? When you opened the bator you could have dropped the humidity too much causing the chick to get shrinkwrapped, which in turn will kill the chick. You can either wait it out and see if it hatches or peel back the shell a bit and see if the chick is breathing and/or moving. The more you open the bator the more likely you are to have problems... Or kill the chick. There may a tiny rip in the membrane that you just can't see. Can you post a pic?