My samsung galaxy s2 will not turn on or charge no matter what. I've taken out the battery and sim and tried putting it back in. I tried the volume up, power, and home button all at once. Even the volume down, power and home button. Nothing happens. Even when I plug in the usb to my pc it won't work. What should I do? I do not want to lose all my contacts, datas, files, picture, etc. 




