System Suddenly Asks For A Password???

I have a G4 450 OS 10.4.11 and when I went to restart it it asked for a password. I have used this system for a few years and this has never happened? I used my regular password and it worked but now every time I restart it, it asks me the same thing. What is also weird is that It says Powermac G3 above the password box. My system is a G4. I believe the drive came out of a G3 computer at one time but not sure how that relates. This has never happened before. I went to system preferences security tab and it does not show login is enabled at all. I did not do anything that I know of to cause this? How can I remove this login requirement and what does it mean that it says G3 when it is a G4?? If anyone can help I would appreciate it.

 

System Asking For Login

The only change is that I recently updated a program called Carbon Copy Cloner.