Keyboard not recognised

My Keyboard no longer lights up and is not recognised by the EVE V 2017. The strange thing is when I do connect the keyboard the bottom taskbar flickers from one size to another. So it seems it knows something is there but does not recognise. I have tried to install firmware but the KB Status block is blank and I cant press ‘GO’.
Is it just the case the keyboard is not charging anymore? is there a way to charge if so?
Thanks