Table of Contents:
- Overview
- How to Access the Diagnostics Tool
- Running the Diagnostics and Test Results
Overview
The new Chrome OS diagnostics tool can be used to investigate the battery, processor, and memory status of a Chromebook in real time.
You can run troubleshooting test routines, where results and telemetric information can be saved in a session log file. This can be used to assist with the following:
- Streamline the troubleshooting process.
- Easier knowledge transfer and sharing of results.
- Enable Support Agents to identify the best cost-effective fix and to validate a solution.
When should the Diagnostics tool be used?
- The Chromebook battery is draining fast.
- The Chromebook is running slow.
- The Chromebook is having memory problems.
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How to Access the Diagnostics Tool
You can use the following two methods to access the diagnostics tool.
With the Launcher
- At the bottom left of the screen, select the Launcher (Figure 1).
![Chrome OS Launcher](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_1.jpeg)
Figure 1
- Locate the Omnibox (Figure 2).
![Chrome OS Omnibox](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_2.jpeg)
Figure 2
- Type Diagnostics in the Omnibox to locate the tool (Figure 3).
![Chrome OS Search](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_3.jpeg)
Figure 3
With the Settings
- At the bottom right of the screen, select the Status Tray (Figure 4).
![Chrome OS Status Tray](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_4.jpeg)
Figure 4
- Select Settings (Figure 5).
![Chrome OS Settings](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_5.jpeg)
Figure 5
- Select Search (magnifying glass) (Figure 6).
![Chrome OS Search](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_6.jpeg)
Figure 6
- Type Diagnostics into the Settings search bar. Select Diagnostics in the search results (or press the Enter button) (Figure 7).
![Chrome OS Search](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_7.jpeg)
Figure 7
- Under About Chrome OS, locate and select Diagnostics to open the App (Figure 8).
![Chrome OS Search Results](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_8.jpeg)
Figure 8
- Select the diagnostic you would like to run (Figure 9).
![Chrome OS Diagnostics Tool](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_9.jpeg)
Figure 9
Note: Running the processor tests can stress the Chromebook to the point where normal use may be difficult.
Typical run times for tests.
- Battery 10-15 minutes.
- Processor 10-15 minutes.
- Memory 10-40 minutes.
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Running the Diagnostics and Test Results
Use the following steps to run the diagnostics and save the test results.
Note: Only one test can be run at a time. The steps below are for the battery test, but is used as an example.
- Select Run Charge Test (Figure 10).
Assess discharge rate.
*The Chromebook should be unplugged from AC power for the battery test.
![Chrome OS Diagnostic Test](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_10.jpeg)
Figure 10
- If a test fails in any of the three testing routines, you may investigate more from the Help Center
(Figure 11).
![Chrome OS Battery Diagnostic Test](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_11.jpeg)
Figure 11
- A faster way to investigate why certain tests have failed is clicking “Why has this test failed?” (Figure 12)
![Chrome OS Battery Diagnostic Test Results](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_12.jpeg)
Figure 12
- If a test fails, session logs will be saved by clicking Save session log (at the bottom of the Diagnostics tool) (Figure 13).
![Chrome OS Diagnostic Tool Save Session Log](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_13.jpeg)
Figure 13
- You can download the .txt file and share it using chat support, email, or verbally on the phone (Figure 14).
![Chrome OS Save File As](https://supportkb.dell.com/img/ka02R000000cFbVQAU/ka02R000000cFbVQAU_en_US_14.jpeg)
Figure 14
Diagnostic logs are only available on Chrome OS devices running version 90 and above. Learn More About Updating a Chromebook's Operating System ![External Link](https://supportkb.dell.com/img/ka02R0000008358QAA/ka02R0000008358QAA_en_US_3.jpeg)
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