Is it possible that it is just not displaying the bar on the bottom?
Try pressing Ctrl+G to try and show the grid and see if it does actually show the grid.
I'm not saying that will help much but maybe in the code the bar uses some kind of shader that doesn't support your laptop (which you have already speculated).
Or maybe your laptop is just too old for the Unity Engine version that is being used by the program.
I think it uses Unity because all of Sebastian Lague's other projects use Unity and this one kinda gives tha vibe of Unity Engine.
I hope this is helpful and does not waste your time.