Blocked from using tablet. Unknown password

My Lenovo tablet recently failed to boot up. I resorted to a hard reset (which meant I lost all my data). After the reset, I was prompted to enter the password which I used when I first set up the tablet. I DO NOT KNOW THIS PASSWORD. I tried to change the password when "Forgot password?" was shown. This I did but it seems I have been totally locked out of my tablet because any new password is not good enough. This feature is not security....it is stupidity!!! PLEASE can someone tell me how to override this ridiculous situation so that I can use my tablet once again. Thank you!!!