Dell Pro All-in-One Desktop Fails to POST with Solid Amber Power LED

Summary: The following article provides information about a Power-On Self-Test (POST) startup error on Dell Pro All-in-One (AIO) desktops. The desktop may not turn on if left switched off for longer than 10 minutes. The power Light Emitting Diode (LED) is solid amber with no image on-screen. ...

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Symptoms

AIO desktop does not turn on correctly after sitting turned off for longer than 10 minutes

 

Reports state that Dell Pro AIO desktops may not restart if left switched off for longer than 10 minutes. Once the desktop is off longer than 10 minutes, pressing the power button does not boot the desktop into the operating system. The power button LED is solid amber with nothing seen on the desktops screen.

This affects the following Dell products:

  • Dell Pro 24 All-in-One Plus QB24250 desktop
  • Dell Pro 24 All-in-One QC24250 desktop
  • Dell Pro 24 All-in-One QC24251 desktop

Cause

The Embedded Controller (EC) is not able to handle the Watch Dog Timer (WDT) interrupt. The EC does not switch to the internal clock, and this means that it cannot load code after it resets.

Resolution

Recover the desktop to boot to the operating system and update the BIOS:

Recovery Steps:

  1. Disconnect the AC adapter cable from the back of the AIO desktop

  2. Wait at least 10 seconds before plugging the adapter cable back in

  3. Press the power button on the desktop and it should boot

Note: Administrator rights are required on the laptop to make any operating system changes or update any software.

Update the BIOS to version 1.8.1 to resolve the issue. The following link gives instructions on how to download and install the Dell_Pro_Plus_QB24250_QC24250_QC24251_1.8.1.exe, file:


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Affected Products

Dell Pro 24 All-in-One Plus QB24250, Dell Pro 24 All-in-One QC24250, Dell Pro 24 All-in-One QC24251
Article Properties
Article Number: 000376127
Article Type: Solution
Last Modified: 24 May 2026
Version:  6
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