no it does not go all the way inside, maybe oyu can try a different adapter and see.. when you connect the cable to the tablet, press it a little (just in case) and wait like 10 seconds for the battery icon to appear..
if nothing happens, while cable is plugged into tablet, try presing and holding power button for few seconds, you should feel a vibration as it turns on..
in my case, since tablet had 0 charge it would not turn on, but witht he power cable connected it would turn on. and the moment i remove the power cable it would turn off again..
with the power cable plugged in, if you are not able to see the battery icon OR turn on the tablet, i would guess there is a problem.. just to be sure try a different outlet as well..
Thanks for the reply (repped). My issue is that even with the power plugged in, it would not turn on at all...I put it to charge via USB through my laptop and it still didnt work... I guess I was the lucky one who got the only one that didnt work... T_T