How to upload the Python code to OpenMV Cam

Hello, I would like to ask. I wrote the code on a computer, opened the open mv cam script and reset the open mv cam, it can be displayed on the computer and there are results, but in other computers or other charging If you don’t move the battery or other ordinary things that can provide electricity, there will be garbled characters and will not move directly. What is the problem? I ask you guys to answer.