I have been getting a constant Blinking Power LED (1 long white and 4 short ember) I cant seem to find the error code online.

The computer works fine with the power plugged in no issues, but when unplugged turns off immediately, which I thought indicated a battery replacement. I replaced the battery and nothing changed, I still get the same flashing power LED.

The replacement battery is recognized in Windows with a 55% charged capacity but doesn't charge any further nor does it discharge.

I tried uninstalling the Microsoft ACPI-Compliant Control device driver in Device Manager and restarted the computer, but that failed to fix the issue as well.

I have ran the offline Dell Diagnostic several times but comes back with no errors.

I also ran the Dell Support Assist in Windows, and comes back with no errors as well.

There are no BIOS updates as I have applied all available critical and recommended updates.

Can anyone explain what the issue could possibly be and how to fix it?

⟐ Answer accepted March 09, 2026 at 19:54 MST