How to delete 2 administrator account

Start --> Run 

Type in "control userpasswords2"

You'll see a list of user accounts that you can delete or edit passwords of but some of them are system accounts. So be careful which ones you delete.





If it doenst fix, check this:
If you are sure that yours is an Admin, then you can go to Start>Run>
and enter cmd.exe to bring up the command prompt.

There you can enter "Net user NAME /DELETE" (without the quotations) where you replace "NAME" with the name of the account you want to delete. Hope this helps.