Same deal, although mine was out of the warranty window when this started happening. (A slightly over a year.) Removed the battery and was just using it on AC power.
And then the hinge holding the display broke (seems to be another common problem too...) I'm not impressed by their build quality...
It's typical Chinese crap. My GPD Pocket came with pressure marks on the LCD backlight out of the box. I got it swapped under warranty. The promised 12-hour battery life is more like 1, which is a shame, because the thing is so slow that you'll need the extra battery life to get anything done.
And then the hinge holding the display broke (seems to be another common problem too...) I'm not impressed by their build quality...