Problem BBB is off!

Hi sorry for my english, i not speak english, i have a problem whit my beaglebone black, after giving the command “poweroff” the beaglebone black as shut down, but now not working, all LEDs are off, also the LED power is off!! someone tell me what the problem is? thank you

Did you try pushing the power button or unplugging the power/USB cable and plugging it back in?