Toenail

my laptop worked great.. everything is well, and i thought id go ahead and do a battery calibration on it just for giggles... it finished and i hit the escape key... and windows was booting up.. i hit F2 do goto the bios menu.. when i did that the pc turned off... now its dead! yes DEAD! does nothing.. no lights, no music.. just anger! any suggestions as to what could have happened... i tried booting up with the battery out and ac in and nothing, plus vice versa. any help would be greatly appreciated! (its my baby) thanks