I have an iPhone 4 and for the past 24 hours it will not turn on. I have tried to charge it and it will not do anything. I plugged it into the computer and it will not even sense that anything is plugged in. I know that it is on because the sound slider on the side will not vibrate when I switch it. To make matters worse, my top button hasn't worked for a while and I don't know what to do from here!