someone help me?

[blake16]

my e420vo vizio wont turn
on. the controler got bumpped and the parental control thing popped up where u have to put in the code. i hit exit and the screen said input locked. it wouldnt go back to what i was watching so i turned the tv off. when i tried to turn it on, it wouldnt. the vizio logo on the front will go white like its turning on, and the screen would turn on to show the logo but then it would turn off on its own. ive tried a bunch of different things, i just dont know what to do

 

[hang-the-9]

What did you try already? If you went though trouble-shooting the issue, the only thing left may be replacing the power or system board or the TV.