For clarity, it sounds like you have a separate power supply for the laser module. Is that correct?
Is your laser a 12V or 24V machine? And what about the laser module?
If you disconnect the laser module do you still get the same warning about “No Power Supply”?
If you have a volt meter check that you’re getting proper voltages from the power supply. If you do not, then unplug USB from your computer. Are you able to power on the machine?
Yes I have a separate power supply for the laser Its the 10 watt from Ortur 24volt , my machine is 12 volt so they sent a 24volt plug and a new board. I have a multimeter but I just tried it and its fubar