Ever accidentially disable your Administrator Account? if so here is how to enable it.
First restart your computer
Second keep pressing F8 until save mode shows up
Third get into save mode then once in press ctrl+atl+delete a few times until the login screen shows up
Fourth type in Adminstrator then clik ok
Fifth your now in click start then administrative tools go to computer managment
It should say users and groups click on the plus sign to expand
click on users then in adminstrator double click it under description it says account is disabled uncheck that option then restart your computer. Now your adminstrator should now be enabled. It worked for me.