Iphone 3gs black screen

I dropped my phone and then my screen started flickering, so I turned it off and laid it on my dresser and forgot to turn it back on, but now I can't get it to turn on. Like I keep getting a black screen and when I switch to the vibrate slot it'll vibrate but my screen stays black!

I've tried the hold button and home button but I can't see the Itunes Logo and it just stays black. I've reset it on Itunes but It still won't go away.

So it like just the soft problem, you can make your iphone into the DFU model(hold the power button and home button together for 15 seconds) Hope it can help you

_I would like to TravleChina.HK