why am I getting this message: Here's why this should be your next tv?

How do I get the tv back on? my daughter pushed some buttons and the tv seems to have gone to some factory preset. the message reads: Here's WHY this should be your next TV. It then lists out some reasons why such as Easy to Use Remote Control, Great Picture, Smart Sound, Smart Features. It then seems to go through some programming options/definitions of features such as Sleep Timer, etc. It then repeats all of the above continuously. I cannot power it off either. I unplugged it and the same message returns.