Bullet v2 makes very loud noise when starting up

My Bullet v2 starting making a very loud noise when I change fan speed was at F9. Then I pressed PRS button to change mode, and once I arrived to shut down mode the loud noise was occuring again.

After turning off the machine, when turning it back on, the same noise is occuring.

Video in zip file attached

Noise video.zip (2.7 MB)