hi all newbie here..... I have a G1-WH whihc has been working fine when suddenly today there is no display working. Blue light is "on" on top left of unit, but nothing else. no buttons work, cycling power on/off does nothing, and have tried reset button several times. i pplugged into pc and blue light comes on again, but pc not sensing an external device through the usb? Is this thing pooched? Also tried powering on with/without sd card inserted. i have had unit for 2 months and setup was successful and it has been working up until now with no issues....