hello

i have a elitebook 2560p.
it dose not react to power button!
but if i connect the ac adapter or the battery it powers on, i see the hp logo and then powers off. and it will not power on again if i push the power button.
so with the battery out, if i connect the AC adapter it powers on for about 5 sec then off.
i checked all voltages, are ok
i flashed a new bios...all the same

any ideeas?>

forgot to mention, on the power button i have 0.3V instead of 3.3v.