please help. I lose on the next day. the printer is new. just made up according to the instructions. Problem setting bed. one engine is not going up and buzzes. in settings, you can move it. how to fix it?

my printer is Geeetech Rostock mini G2S .

here is my problem:
https://youtu.be/r26j1kd5WfA
https://youtu.be/r26j1kd5WfA