Hi I brought this laptop from someone I don't kno. I went to turn it on its asking for a password.. once it first come on.. nothing shows but a white screen and gray letters.. it won't let me in until I put that password in.. and the famous admin. Password doesn't work.. so how can I get in it?
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We can't help you circumvent security measures here. I suggest you get with the owner and find out what their passwords are.
You might be able to reset the BIOS without the password, but talking to the owner somehow is probably the best way to do anything with this. If you're unlucky, this might be a stolen model if it has a password like this.
You "bought" a laptop without even seeing it work or turning it on yourself. Either, it'stolen and you're lying or you're extremely dumb.