Not sure if this is helpful at all, but I’ve noticed that sometimes I will get “white screens” when choosing a new theme from inside ES, but then it will boot/load fine after quitting out of ES.
This happens after I have manually editied ES settings to carbon and then in ES switch to simple-dark, I have to restart ES. That is the weird part, it is fine doing that, just not when I do a total reboot.
Even when previously (different install to this one) I switched to a theme that was nothing but white, the ES menus still popped up and worked. When I boot it is just a white screen and totally unresponsive to any input via gamepad or keyboard. The only way to get it doing anything is the SSH in and there I can edit, reboot etc.