Running the ePSA and LCD BIST Diagnostics on the Latitude 5300 2-in-1 and 5400 Chromebook

Summary: The following article provides information about how to run the integrated diagnostics on the Dell Latitude 5300 2-in-1 and 5400 Chromebook laptops. These diagnostics include the Enhanced Pre-Boot System Assessment (ePSA) and Liquid Crystal Display Built-In Self-Test (LCD BIST) diagnostics. ...

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Instructions

Table of Contents:

 

  1. What are the ePSA diagnostics and how are they different with the ChromeOS?
  2. How to start the ePSA and LCD BIST diagnostics on the Latitude 5300 2-in-1 and 5400 Chromebook Laptops

What are the ePSA diagnostics and how are they different with the ChromeOS?

 

Dell has a suite of self-diagnostics that is of built into its Laptops, Desktops, Servers, and Windows-based Tablets.

These are called the Dell Enhanced Pre-Boot System Assessment (ePSA) and the Liquid Crystal Display Built-In Self-Test (LCD BIST).

When you cannot boot your laptop, these self-diagnostics are the first thing that you should try to run. Any error codes that the tests provide can go a long way toward troubleshooting your issue.

There are several differences that you must be aware of. Running the ePSAs and BIST is different on Dell laptop's running the Chrome operating system:

  • The LCD BIST cannot be run separately on these laptops, it is accessed though the ePSA diagnostics.

  • Use the latest over the air (OTA) update to ensure that your Chrome operating system is up to date with the latest available version. See the following article for more information about this:

Note: If you are looking for more information about running the LCD BIST or ePSA diagnostics on a Windows device, see the following link:


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How to start the ePSA and LCD BIST diagnostics on the Latitude 5300 2-in-1 and 5400 Chromebook Laptops

 

Steps to access and run the ePSA and LCD BIST diagnostics:

  1. Press and hold down the F2 key and the Power button to turn the laptop on, it should boot to a Chrome recovery screen.

    Chrome Recovery Screen

Note: While the recovery screen prompts for a recovery USB drive, a recovery drive is NOT required to run the onboard diagnostics.

 

  1. Press the F12 key to launch the diagnostics from the menu shown on-screen:

    • If the F12 option is not listed on-screen, then you must exit the window on-screen. Update your Chrome Operating System to the latest version available, then start over from step 1.

    • If you press the F12 key, but the laptop does not do anything. You can press the CTRL + C keys together to complete the same action.

  2. The laptop presents a screen stating Press the POWER button to run diagnostics - to go back press the ESC key.

    Chrome Diagnostic Screen

Note: It is recommended you wait five seconds before pushing the power button. If you are too quick in pressing the power button, you could preempt the laptop. This may cause it to shut down instead of booting to the diagnostics as intended.

 

  1. Press the power button to run the diagnostics.

  2. The laptop shuts down and restarts to boot into the ePSAs (The LCD BIST is the first part of this series of tests).


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Affected Products

Latitude 5300 2-in-1 Chromebook, Latitude 5400 Chromebook
Article Properties
Article Number: 000138952
Article Type: How To
Last Modified: 15 Nov 2024
Version:  8
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