On the side of the phone push the volume button up to enable sound and audio.

In settings click settings, sound, and click silent to turn off silent.

(Look into repair guide)

Hold the top right button until the device is off and plug the charger in a working outlet. then, plug the charger into the phone

In settings, general, restore phone. Then, enter your passcode and wait until the restore is finished.

Hold the top right button until the device is off and plug the charger in a working outlet. then, plug the charger into the phone.

The battery has been drained past its critical threshold. Your phone probably won’t turn on until you get the battery back up to five percent or so.

Its possible the wall charger or cord is defective. If able to, test with a known working cable.

It is possible that it appears nothing is happening because the display is bad. The display might need to be replaced.

Due to a bug in andriod 2.1, some phones have faulty 3g programming. Rebooting the phone and placing it in airplane mode for 12 seconds solves the 50% uptime problem. This would have to be applied every time after reboots. Updating Android will fix this though.