While I am FAR from the expert on PC to arcade monitor however a few things that I would try that I didnt hear in your vid:
1. Does the PC work with a "standard" PC monitor
2. Am I totally sure this is a totally functional arcade monitor
3. Is my desktop size and refresh rate set correctly
4. Do I have the correct video card drivers installed
5. Have I double checked how everything is hooked up / wired together
Again you might have tried most of this but off the top of my head in addition to what I heard in your video I would check the few things I listed as well.