LCD screen is blinking a ? mark

[Frode]

Any clue as to why the lcd is blinking a question mark on the axis?

I’m using Marlin, with ramps 1.4

https://youtu.be/ufGYPmeOS1g

[garthvh]

If not homed they blink indicating you need to run G28

[Frode]

Ah, can’t do that just yet. Need to finish the build first.

Thanks!