Symptoms

Dell laptop user may report that the computer displays a warning message 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. Figure 1. Alert! A 15W AC power adapter has been detected. Alert! A 4W AC power adapter has been detected. The system can only boot when a 60W power adapter or greater. Figure 2. Alert! A 4W AC power adapter has been detected Figure 3. A 4W AC power adapter is shown in the BIOS Figure 4. Lower wattage power adapter message in post phase Figure 5. Yellow bang on battery icon If you are using Windows 10, open any application such as Microsoft Outlook, Word or PowerPoint, and you may see the message "No battery is detected" (Figure 6). You may also see this message when you leave the computer idle for 10 to 30 minutes. Figure 6. No battery is detected Affected Platform with Impacted BIOS Version: Latitude 5340 - BIOS 1.5.0/1.6.0/1.7.1Latitude 5440 - BIOS 1.5.0/1.6.0/1.8.1Latitude 5540 - BIOS 1.5.0/1.6.0/1.7.1Latitude 7340 - BIOS 1.5.0/1.6.0/1.8.1Latitude 7440 - BIOS 1.5.0/1.6.0/1.8.1Latitude 7640 - BIOS 1.5.0/1.6.0/1.8.1Latitude 9440 2-in-1 - BIOS 1.3.2/1.4.1/1.6.0Precision 3480 - BIOS 1.5.0/1.6.0/1.8.1Precision 3580 - BIOS 1.5.0/1.6.0/1.7.1Precision 3581 - BIOS 1.5.0/1.6.0/1.7.1 Affected Docks: Dell Dock WD19Dell Dock - WD19SDell Thunderbolt Dock - WD19TBDell Thunderbolt Dock - WD19TBSDell Performance Dock - WD19DCDell Performance Dock - WD19DCS

Cause

Not applicable.

Resolution

The engineering department is working on a fix to be released in the following BIOS versions. The updated BIOS is posted to the computer's support page once it is made available in February 2024. To download and install the BIOS, reference Dell BIOS Updates. Latitude 5340 - BIOS 1.10.0Latitude 5440 - BIOS 1.12.0Latitude 5540 - BIOS 1.10.1Latitude 7340 - BIOS 1.11.0Latitude 7440 - BIOS 1.12.0Latitude 7640 - BIOS 1.12.0Latitude 9440 2-in-1 - BIOS 1.8.0Precision 3480 - BIOS 1.12.0Precision 3580 - BIOS 1.10.1Precision 3581 - BIOS 1.10.1

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