Don't know my Admin name and it won't let me change or edit my settings. Help!

Question

I recently changed my Admin setting so that I could use parental controls on my laptop, as my exams are coming up I wanted to block websites that would distract me. It told me I had to restart my laptop so I did, and when I went back to setting it told me I had to unlock it,coming up with the lock key. Its asking me for my admin name and password. I've never paid much attetention to my admin name as it normally comes up automatcally, but nothing I put in is accepted and I know my password's 100% correct. People have said to use the account name and things but that doesn't work either and I've retyped my name about 100000 times. It would be really helpful if anyone knew how to solve this. Thanks

Answer 1

Look in System preferences > Users and Groups [formerly Accounts]...
... all the Accounts should be shown there, along with an Indication of which Accounts are Admin. What will NOT be shown are the passwords that match those Accounts, and there is no way to extract those passwords, as they are never stored "in the clear" (always encrypted).
If you don't remember a password, you will have to use a convoluted process to replace the old password with a new one going forward (and the old password is discarded in the process).