hi my tablet will not power up even though it has the battery charging icon, it died and went black when i was using it 75% charged. ive done a full hard and soft reset reboot nothing works. it gets as far as the samsung start up logo then the glowing samsung then goes black again.....when in hard start up mode andriod doll has a explation mark in a triangle above it?? can anyone help oh ive tied lots of different chargers to no effect
