Samsung SGH-U600 "phone keypad disappear" Questions

...keypad just blink.. i was charging the phone for 1 hour while it was open, when i remove the charger and put it back again,it shuts down and it wont open again..what will i do???please ...

...keypad. Turn your phone over so that you are looking at the back of it. Open the battery cover door by sliding the button on the back of the phone up. Remove the battery from the back of the phone by ...

...keypad and squeezed the screen a little and it flashed the desktop before disappearing again. Any ideas? the same thing happend to me but if ixed it what you do is go to the shops and buy and small ...