Why isn't my Samsung Galaxy S3 turning on right?

[AC Question]

why my sumsung galaxy S3 don't turn on right ??

Hi... I have problem with my sumsung galaxy s3 i press the turn on/off botton to turn it on but its just show me the model of the phone , i mean its showing Sumsung Galaxt S3 GT-I9300 and that is all... it cant turn on right i cant see the menu or doing something else.. it just turn off and from that moment i have that problem ..