I cannot enter login password in my cylinder Mac Pro in the login screen. I did tests and it looks like not hardware problem but software. What me to do, please help?!!! It looks to me that some bug in software itself happened since last update I cannot restore last copy because it does not enter password. My computer is encrypted with Apple FileVault so i cannot reinstall OS because it asks password from main hardrive which i cannot enter either. Update: Solution: Hi guys. I resolved problem in this way. I formated main harddrive thrue Command-R and then i was able to reinstal OS from ground up. Then i went to Apple Migration Assistant and wanted to restore information from Apple Time Capsule and it did not work and it was saying there is en error and are missing some containers. So i entered Time Capsule by manual and by manual was retriving importent folders which contain date for programs like Desktop, Documents and other places. And after thet programs itselfs i had to reinstall fom ground up. So for now looks like awrything is ok. Post scriptum: If i did no have Apple Time Capsule then i would lost all my work and date of my life!!! Because my computer was encrypted and password protected and due to software bug in Apple OS itself i was not able to enter password to log in to my computer!!! Apple must be more careful and make sure it does not heppen!