How to restore with admin lock forgotten PW screen A1224 os 10.4.10

One other way I seen was to remove one ram or do you have to install a different ram and hold either command on Windows keyboard either Ctrl+Windows or alt +r+p and let it flash chime 3 times it'll reset or reboot without an admin PW to regular o/s where can continue operating as normal and use it with own pw

If you connect an ethernet cable will the computer automatically connect to the internet? Says sometimes trying to reinstall os reset will work with the internet connection on the apple support.

what is ctrl is ctrl considered command? So its options-alt command-windows +r+p or command+r on startup but having trouble. I read somewhere that before 2010 imac had the pw stored in the ram and after 2010 they were stored in the efi.

So basically have to swap a ram the max capacity is 4gb of this model and it has two slots only comes with a 1gb ram 250gb hd from the factory. SO basically id have to get a new ram as its 2007 imac and attempt this again alt/windows/r/p which will chime flash 3 times and then reboot to a normal screen without a pw lock. After that i believe you can reinstall the original ram.

Somewhere i read you have to change the size of the ram to perform this task some have 4 slots and 2 rams already so youd only have to remove one and do this method but as its only a 2 slot 1gb ram from the factory and max capacity 4gb. They sell 2 2gb rams for this model for 10$ on amazon.May be worth the try.

Other then that does anyone know on an older 2007 os 10.4.10 imac 20" 1gb ram 250gb hd how to reset it with a admin pw lock thats forgotten. I talked with apple support we tried several methods trying to get to diagnostics and only got to the macintosh hd globe screen by holding alt.

Im trying to do the command+r on start up to erase all disc data macintosh hd then reinstall o/s.

May i ask are the original disc already preinstalled on the computer? Or are they only given with the computer then removed once installed normally? Theres a disc port but with the windows keyboard where is the eject button as there isnt one on the side of the A1224 2007 model imac 20" It is a 2 slotted only 1gb ram and 250gb hd. It says max capacity 4gb ram for this cpu amazon has 2gb rams for 8$ or 2x2gb rams for 12$ would just installing a new ram be the better option about doing this? I read they pw is stored in the ram pre 2010 and after the pw is stored in the efi so swapping the ram wouldnt work.

This disc may be installed how would you go about resetting it doing this method?

With a windows keyboard which is cd eject button as the side slot does not have a button.

Does it need to be connected to the ethernet internet cable to do the internet connection factory reset with the windows/r or windows/alt/r buttons?

This actually what I used. I just need a mouse and can set it up new admin account and delete the old one. I'm not as familiar with apple or iMac is there a regular factory restore once in regular functions?

You have any idea how to reset the admin pw in single user mode adn admin name as well or even a factory reset? command+s?

This was the solution I had found the same in a YouTube video and just restarted same as new just have to create a new account and delete the old one off.

found a solution nevermind