WHAT DOES IT MEANS?!

(is it safe to do?)
(doing flash recovery means destroying all the files in my computer or something like that?)

plz help me...

HELP!!!

I can't get over with that, by pressing "N <-no" it goes to black screen where is only one blinking cursor... WTF?!
And if I start windows normally by pressing nothing it will goes to same screen... Is my computer f*ck*d up!?

plz send a helping message to me...