Dead netbook except leds flash once when power supply plugged

Hi,

my laptop is a packard bell dot (same as the acer aspire one zg5) equipped with a hannstar j mv-4 94v, I disassembled it to fix a wireless module problem, then when i assembled it back and put on the battery the power and charge leds flash for a second and nothing happens when i try to power it on.

same reaction happens when i plug on the power supply or put on the battery.

even the battery doesn't seem to charge anymore (its indicator just flashes for a second as i said)

here's a video: http://youtu.be/ZpjB0Q9bVkU

any help or suggestion?

Thanks,