2011 iMac will not accept password
My 2011 iMac running High Sierra all of a sudden will not accept the known password. It also will not connect with an Apple keyboard. I can use a wired keyboard. I tried to restore from a Time Machine back up, but the only backups shown are for a different computer (Macbook). I verified that the backups for the iMac are on the same drive, but cannot access them.
Earlier displays & monitors