I have my iPhone 2g, i woke up this morning only to see a black screen, tried to charge no response tried to hard reset no response its like the phone is just unresponsive and not willing to do anything i've tried everything! literally panicking with sweat as i type this.
Try holding the power and home button at the same time and then plugging in your phone to the wall charger. You have to do all three at the same time. Once it turns on, if it does, let go.