That first one is the standard boot screen for those types of railway displays. Not so much a crash/BSOD as an "I'm ready" screen.
It's expecting data over serial, but a loose connection or another issue upstream is stopping it from receiving that data.
They are IP capable too, although this particular sign has it disabled. Once saw similar signs on the Vale of Glamorgan line in South Wales all proudly displaying their 10.0.0.0/16 addresses. No idea how they do backhaul though (GSM?).