@lia thanks for you answer,
No, unfortunately no luck at all with the onewheel turning on. It just beeps and that's it.
I can't even identify the exact place from where it beeps but it not coming from the small speaker component.
I have already ordered a GTV kit but still I really wanted to understand why this is happening. Baterry is for sure at 100% because I left it connected 1 entire day.
One thing is also important to mention is that I have not unplugged the BMS cable from the controler as I read that would be really hard to make it work again, but maybe because I already unpluged the battery cable it already broken the BMS.