Won't turn on or charge, recognises on pc.

I had the same problem. Phone turned off and wouldn't turn on or charge. I took out the battery, held down the power on button for 30 seconds, put battery back in, and powered on again. Worked like a charm.

The first thing I would try would be to use Samsung Kies to reset the device. You will likely loose all of your data but it won't be of much use if the phone won't turn on at all. Also are you getting a charging icon when the phone is plugged into the charger? Have you tried simply taking the battery out and holding the power button for 30 seconds or so then putting the battery in and trying it again?

power ic on the phones are blown , you need to replace the part for the phone to get power or charge your battery . its not a software problem its hardware .

"I had the same problem as everyone else. I tried the hold 3 button resets etc with no luck. I pulled out my volt meter and read 4V on the battery so I knew the battery had a charge (not totally dead). I then measured the (+) and (-) leads on the phone and saw that it was still registering 1V with the battery out. It was slowly bleeding off voltage (dropping to .98, .97, etc). I took a piece of metal and shorted the 2 pins to totally discharge the capacitors in the phone. That way I was guaranteed that all power inside the phone was exhausted. I powered up the phone like normal and everything worked. I think it was a glitch or something that put the phone in an unusable state. Just pulling the battery and reinserting is not long enough to exhaust power from the phones internal circuits. If you are uncomfortable shorting the pins out on the phone, Id pull the battery and leave it out a long time - 15 to 30 min. Like I said the power internally was slowly bleeding off. If you dont have patience, you can get the voltage to 0 instantaneously with a paperclip or some other piece of metal across the pins ON THE PHONE. NEVER SHORT THE PINS ON THE BATTERY!! NEVER SHORT THE PINS ON THE BATTERY!! should I say it again? NEVER SHORT THE PINS ON THE BATTERY!!

I hope this helps someone."

Bro I had the same problem but wat I did was I put my charger in the phone and I pressed the on and off button so many times until the battery with the circle in it as soon as u get to tht point keep pressing it then the battery will come back with a little bit of green init wen u get to tht part thn u have to hold the on and off button until the Samsung galaxy s4 pops up wen u get there ur done ur phone will work if it shuts off again and u have the problem do wat I sed over again