Older battery or a failing motherboard.
Because of battery fires many makers implemented a smarter battery and charger system to lock out clone or incorrect charger use.
Do you have the Dell charger? I find most often it's just the wrong charger over the other issues.
When I reboot my computer, I get an error message stating: "The AC power adapter wattage and type cannot be determined. The battery may not charge. The system will adjust the performance to match the power available. Please connect a Dell 45 W AC adapter or greater for the best system performance." When I click on my power option icon it shows "30% available (plugged in, not charging)
Does this mean that my power chord is malfunctioning? Or is there possibly another issue?

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