Hi I am new, so this is what happened I first noticed that when I pluged my usb flash drive to hp 620 (moved from windows 7 to zorin) its gave me an error message said somthing like could not ready so I switched it off than on again, typed in my password than got a error message telling me about zorin greeter so I want to the software centure than unistalled it than rebooted my device but its showed me that zorin logo but not the login page it just when blank so I typed in ctrl+alt F4 which brought me to my terminal I typed in my user name and my password but it won't let me type in my password I googled this problem and they said I was a securety thing and just type anyway so I did that but still no entry keeps telling me try again. So yea that my problem so please help

Good example of a run on sentence. Use punctuation please.

If I understand correctly, when you log in and enter your password you do not see any output on the screen, is that it? Because if it is, that is expected behavior. After you carefully type your password, you hit the Enter key and your should be logged in. If that is not the problem, you need to be more specific on what it actually is.