I bought this iPhone preowned, so there is no warranty. It was working perfectly fine, then I took it out of the case and it was off, and wouldn't power on. I tried the wall charger and via USB, but still nothing. It wont reset or enter DUF mode. My PC wont recognize it. Is there anything I can do? I defintely cant afford another and I got a deal on this one. It is a 2g iPhone w/os 3.0 jailbroke&unlocked.... Please tell me something good, nothing is going right for me. Thank You