Ursprünglicher Beitrag von: David ,
The first thing I would try would be to use Samsung Kies to reset the device. You will likely loose all of your data but it won't be of much use if the phone won't turn on at all. Also are you getting a charging icon when the phone is plugged into the charger? Have you tried simply taking the battery out and holding the power button for 30 seconds or so then putting the battery in and trying it again?