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Disconnect AC adapter, dock cable and any other external devices plugged into the laptop.
If the laptop includes a removable battery, remove it.
Hold down the power button for about 15 - 20 30 seconds and then release it.
If you have removed a battery, plug it back into the laptop.
Plug the laptop back into its power source (AC adapter or dock power cable) and try to turn it back on.
If this does not resolve the issue on the first try, try a second time. If it fails after the second attempt, contact your service provider.
Dell YouTube video “How to Drain Flea Power - Laptop Not Turning On (Official Dell Tech Support)”
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