What does the Led on the top indicate?

[VincentGu]

Is it a simple charging indicator? Green when fully charged and red/green when in charge? My VTAB can not boot since it shut down when in low power. After staying connected with the charger for hours, the led turned green but vtab still couldn't be turned on

 

[Conspirator]

It is a charging indicator. My VTAB always boots up when first plugged in. Try unplugging it for a minute then plug it back in to see if boots. Otherwise try holding the power button for up to 30 second, if it is truly off it should power up, if it is in sleep it should turn the unit off the, press the power button again to power it up. This has worked for me on a few occasions.

 

[VincentGu]

It's now orange (green+red) when I connect the charger. Does it mean being charged? Still can't turned on... even hold power button for several minutes, or together with both volumn buttons