I acquired my pc second hand and it has a password for administrator user account and I don't know what the password is. I can't even make my own user account because of the password. It won't let me download flash player without it thus no videos or youtube will play. Does anyone know how I can download flash player without the password?
There is in fact not much you can do on that computer if you don't have the Administrator password.
The only solutions: ask the person who sold you that computer, or reinstall Windows from scratch.