k001 wont boot/ no display

I have a memopad 10 k001 that wont boot. has orange led at power button when charging and turned green after some time to indicate its done. pressing power button in any combination or length (even 60 seconds) has no effect.. the battery icon mentioned in forums does not appear. display doesnt light at all. I have opened and unplugged battery and reconnected. doing this while charging did cause the charge indicator to alternate orange/green then back to orange when reconnected.. battery is not bulged, display doesnt appear damaged.. connectors in place. help?
thanks