My problem is this:
I was recording the tracks and password recovery and gave an error and told me if I was returning to leave this error restart. I rebooted and the problem is that there is a mark registered with the corresponding password, but does not detect my finger or my password. the problem is that this system is not active. that is, if I try to activate the lock footprint, asking me footprint, does not recognize, I ask for the password, not recognized and I can not activate the lock footprint, but I can not remove the footprint there recorded and password. it seems to have to delete the whole system, but I am too lazy to do that. I have the version of android is 5.0