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A warning message may display when turning on the computer while connected to an AC adapter or Dell Dock. The issue occurs on several laptop models when set in BIOS to auto-power. The wattage error message may differ based on the power source connected. In addition to the error message, the computer is also not properly charging. See the following examples of the warning messages: Alert! A 7W AC power adapter has been detected. The system can only boot when a 60W power adapter or greater. Alert! A 15W AC power adapter has been detected. The system can only boot when a 60W power adapter or greater. Alert! A 4W AC power adapter has been detected. The system can only boot when a 60W power adapter or greater. If you are using Windows 10, open any application such as Microsoft Word or Microsoft PowerPoint, and you may see the message "No battery is detected". You may also see this message when you leave the computer idle for 10 to 30 minutes. Affected Platform with Impacted BIOS Version: Latitude 5340 - BIOS 1.5.0/1.6.0/1.7.1 Latitude 5440 - BIOS 1.5.0/1.6.0/1.8.1 Latitude 5540 - BIOS 1.5.0/1.6.0/1.7.1 Latitude 7340 - BIOS 1.5.0/1.6.0/1.8.1 Latitude 7440 - BIOS 1.5.0/1.6.0/1.8.1 Latitude 7640 - BIOS 1.5.0/1.6.0/1.8.1 Latitude 9440 2-in-1 - BIOS 1.3.2/1.4.1/1.6.0 Precision 3480 - BIOS 1.5.0/1.6.0/1.8.1 Precision 3580 - BIOS 1.5.0/1.6.0/1.7.1 Precision 3581 - BIOS 1.5.0/1.6.0/1.7.1 Affected Docks: Dell Dock WD19 Dell Dock - WD19S Dell Thunderbolt Dock - WD19TB Dell Thunderbolt Dock - WD19TBS Dell Performance Dock - WD19DC Dell Performance Dock - WD19DCS
No cause information is available.
Updating to the latest version of BIOS resolves the issue. To download and install the BIOS, refer to the BIOS Update Guide . Latitude 5340 - BIOS 1.10.0 or later Latitude 5440 - BIOS 1.12.0 or later Latitude 5540 - BIOS 1.10.1 or later Latitude 7340 - BIOS 1.11.0 or later Latitude 7440 - BIOS 1.12.0 or later Latitude 7640 - BIOS 1.12.0 or later Latitude 9440 2-in-1 - BIOS 1.8.0 or later Precision 3480 - BIOS 1.12.0 or later Precision 3580 - BIOS 1.10.1 or later Precision 3581 - BIOS 1.10.1 or later
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