SamyGO

Hi,
i have some problem with my tv i used without problem until today,after i read in the samy wiki how to enter into menu service i have only read the setting but when i've power off and power on for exit menu service something was changed now the hdmi is very clear and i can see the correct size with pc setting i dont see all the desktop and i have choose adapt to screen for see all, someone can help me sending the original setting of this tv for compare with mine???
Thanks so much

Maybe i have understaind what's happened i accidentaly press a hdmi and have give me failure result anyone can told me how solve this problem????Can i recalibrate hdmi or i can sent to samsung center?