Arduino runs without power supply!!

So my Arduino is not attached to my 9V psu nor my computer via the usb, and yet it has power. It runs my program and the PWR light is on. The arduino is controlling a buckpuck which has 24 volts coming in…don’t know how its getting rerouted to power the arduino… Must be that cause there is no other power supply.

Would suggest you check your wiring as it would seem something is connected wrong and the next event will be a failure because you are feeding 24V someplace you shouldn't.