If it still gets power, try resetting the NVRAM (power it off, pull the battery and charger out, press and hold the power button for 5 seconds). If it continues after that, you might be looking at hardware failure, minor or critical.
If it still gets power, try resetting the NVRAM (power it off, pull the battery and charger out, press and hold the power button for 5 seconds). If it continues after that, you might be looking at hardware failure, minor or critical.