Fix Yellow Triangle with Exclamation Mark on Battery Symbol

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It is not uncommon to see a yellow triangle with an exclamation mark above the battery icon in the Windows 10 taskbar. However, if you notice it immediately after buying it, you may be worried. However, this does not necessarily mean that you must replace the battery.

Update the BIOS

It is important that you keep your system BIOS up to date. New versions of the BIOS can provide hardware compatibility improvements, improved diagnostics, security updates and increased stability.

Update BIOS

  • Once you have determined that you need a BIOS update, you can download the latest version.
  • Download the BIOS Update.EXE file to another system.
  • Copy the file for example O9010A12.exe to the bootable USB stick.
  • Insert the USB stick into the system that requires the BIOS update.
  • Reboot the system and press F12 when the Dell Splash logo appears to display the single boot menu.
  • Use the arrow keys to select the USB memory device and press Enter.
  • The system starts with a Diag C:\> Command prompt.
  • Run the file by entering the full name of the file, for example O9010A12.exe and press Return.

The BIOS update utility will load, follow the instructions on the screen.

Rollback Driver

Right-click Start to open the Device Manager, select the battery-powered device under Battery, select the Drivers tab, and, if available, reset the driver. If it is not available, select Uninstall driver, restart the PC to perform the reinstallation.

July 2020 Update:

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Run the Power Troubleshooter.

This Power Troubleshooter will automatically troubleshoot Windows power plan problems and detect and reset system settings that can affect power consumption, such as timer and sleep settings, display settings and screensavers.

To run power convenience stores, open Windows Settings and select the Update and Security tab.

  1. Then, under the heading “Update and security”, look for the option “Troubleshooting”. If found, select the option, scroll down and select Power.
  2. Press the “Run Troubleshooting” button and wait a few seconds for the troubleshooting to detect the problems.
  3. Then follow the instructions on the screen.

You can also follow these steps

  1. Please let me know the status of the lamp on the power supply unit.
  2. Try charging your computer with another well-known power source and check if it works.
  3. If this does not work, remove the battery from your computer and disconnect all external devices (such as a printer, scanner or USB device) connected to your computer.
  4. Press and hold the power switch for 10 to 15 seconds to discharge the remaining energy.
  5. Keep the battery outdoors for at least 2 to 3 hours.
  6. Then insert the battery and charge it overnight with the system off.
  7. Then turn on the computer and check if it is working.


If nothing else helps you, you may need to replace the battery. However, I will tell you that most OEM batteries and chargers have problems, so I would only buy the manufacturer’s official battery from the PC manufacturer to be sure.

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