I have a Galaxy S3 and it was perfectly fine at 6:00 A.M. this morning but then at 9:00, I had just woke up, it was completely shut off and wouldn't turn on. So I then continued to pull the battery out and put it back in and it turned back on. I thought nothing of it. Until after the 3rd or 4th time it happened. Then it shut off and I cannot turn it back on. It goes to the "Samsung Galaxy S3" page, the second screen to pop up and then it freezes there. I had about 85% battery in my phone when this happened. It's my only way of communication so I need it fixed. I have tried the whole "Hold the home button, volume up button, and power button then release the buttons." or whatever and it won't work. I don't want to wipe everything on my phone because I have lots of pictures that I need to keep. What can I do?