Sounds like hardware failure. What's the model of the computer?
If the battery is external, try removing it & the charger, then press and hold the power button for 10 seconds. Reconnect the battery & charger after, then try powering it on again.
Sounds like hardware failure. What's the model of the computer?
If the battery is external, try removing it & the charger, then press and hold the power button for 10 seconds. Reconnect the battery & charger after, then try powering it on again.