Marlin won't move Z axis

Hello everyone! I'm working on the final parts of my custom 3d printer, and I ran into an issue with the Z axis. I am able to home the z axis and fine tune it from the Full Graphic Controller, but the z axis does not move during prints. I have verified this by watching the lead screw and the software control as well.

Any help will be greatly appreciated.

you hear any sounds of life from the motor when it should be lifting, whats your speed setting in firmware.
you know how to take volt reading of the pots on the stepper driver?. whats it reading.

I'm sorry can you elaborate on this?

Z max feedrate is probably to high in your firmware settings

If it won't move during prints, can you try moving it really slowly manually?
For example, over the Serial interface over USB with OctoPrint, Pronterface or similar?
If it does move, then indeed, you have to just limit to how fast it can go (with testing to see how fast it can reach). In addition to the top speed, it can be the acceleration of the Z axis, which can be the limiting factor as to how high of a speed you can reach.

Thanks everyone, but I solved this bug. On to the next!