So my father plugged a mini usb charger (the one for my bluetooth GPS unit it has 5v 850ma output) into the usb plug of my 770 and now my 770 shows no signs of life. I've tested the battery with a battery tester and it shows 3.7volts, so the battery is fine.

I hold down the power button but nothing happens. I've plugged it into my pc via usb to see if that did something, but no reaction. Iplug it into the charger and no reaction either.

Is there some sort of reset that i can do using some sort of buttom combination??

Does anybody have any suggestions or is my dear 770 dead???

thanks