Symptoms

Chromebook 5190 or 5190 2-in-1 no power You may encounter a situation where a Chromebook 5190 or 5190 2-in-1 system will not power on immediately after connecting the AC power adapter. It is normal behavior for a Chromebook 5190 or 5190 2-in-1 system battery to discharge to below 0% battery charge. It is recommended that the system remain plugged into AC power for 30 minutes or more to charge the battery in this situation. When AC power is connected to the system, the power LED has a solid amber indication. If the system continues to not power on or boot up after 30 minutes of charge time, follow the steps within the below flowchart to determine the next steps to take. You can use the following flowchart to help troubleshoot the No Power issue on the Chromebook 5190 or 5190 2-in-1 (Figure A): Figure A: Flowchart to use as a guide for troubleshooting No Power on Chromebook 5190 or 5190 2-in-1. The following table shows the Power LED behavior for the Chromebook 5190 / 5190 2-in-1 to aid in troubleshooting No Power issues (S0 = working state; S5 = shutdown or off state; S0iX = system in sleep state) (Table 1): Charging/Power StateLED behaviorCharging (S0/S0iX/S5) Solid AmberFull Charged (S0/S0iX/S5)Solid WhiteDischarging in S0Solid WhiteDischarging in S0iXBlinking WhiteDischarging in S5OffBattery ErrorBlinking Amber Table 1: Chromebook 5190 / 5190 2-in-1 Power LED behavior

Cause

No cause information

Resolution

NOTE: This process takes about 5 minutes to complete once the system is deprovisioned. To perform a Read Only (RO) Firmware Update on your Chromebook 5190 or 5190 2-in-1, follow the steps below. Before you begin, verify that the Chromebook 5190 or 5190 2-in-1 is Deprovisioned by following the guidelines provided in the following Dell Knowledgebase Article: How to Verify a Chromebook Has Been Deprovisioned. The following steps update the Read Only (RO) Firmware and resolve the No Power issues on the Chromebook 5190 or 5190 2-in-1: NOTE: For security reasons, the Read Only (RO) Firmware Update cannot be pushed through normal Google update processes. To proceed with the installation, scan the barcodes OR type the script. If you have a Barcode Scanner, barcodes are provided for each command to make deployment easier. Log in to the Chromebook and run auto updater (you can run Google auto update following the steps outlined in the following Dell knowledge base article: How to Check for Software Updates on your Chromebook). Note: Update to the latest version of ChromeOS or at least a minimum of R75. Transition to Developer Mode (Hold the ESC key + Refresh key + Power Button, release all three keys and wait for the Recovery screen to appear (Figure 1). After the Recovery screen appears, press Ctrl + D) and press Enter (Figure 2): NOTE: If there is an error message stating that Developer Mode is blocked, then the system is likely not de-provisioned. Deprovision the system and start over. Reference the following Google support article for instructions on how to deprovision your system: Repair, repurpose, or retire ChromeOS devices . Figure 1: Chromebook transition to Developer Mode Figure 2: Chromebook OS Verification Power off the Chromebook. Remove the back cover and disconnect the battery from the Motherboard. Put the cover back on the system, leaving the battery disconnected. Plug in AC power and boot the Chromebook up by pressing the power button. NOTE: If the Chromebook does not turn back on initially, then the AC power cable must be removed and reinserted into the system AC power port. The system reboots to this screen (Figure 3), and two beeps occur after 25 seconds. Figure 3: Chromebook OS Verification is OFF The system starts to run the mode transfer to Developer Mode. It takes around 5 minutes (Figure 4 and 5). Figure 4: ChromeOS Developer Mode Figure 5: ChromeOS Developer Mode The system reboots to the Following screen (Figure 6): Figure 6: Chromebook OS Verification is OFF Wait for two beeps and it should auto reboot to the Welcome lets go screen within 25 seconds. (Figure 7) Figure 7: ChromeOS Welcome Screen Press the Ctrl + Alt + -> keys at the Welcome lets go screen (Figure 7) to access the CROSH command line (Figure 8:): Figure 8: Access the CROSH command line Log-in with root - there is no password needed (Figure 9): Figure 9: Log in with root When the localhost ~ # prompt appears, scan or type flashrom –p host ––wp–disable (ensure you get a successful message, as shown in the command line below with SUCCESS) appearing. If you do not get the SUCCESS, then reenter the flashrom –p ec ––wp–disable again), then press Enter (Figure 10): Figure 10: Scan or type flashrom –p host ––wp–disable at the localhost ~ # prompt and press Enter Scan or type flashrom –p ec ––wp–disable and press Enter (ensure you get a successful message) (Figure 11): Figure 11: Scan or type flashrom –p ec ––wp–disable and press Enter Scan or type halt then press Enter (Figure 12): Figure 12: Scan or type halt then press Enter Wait for the Chromebook to power off. Remove AC power, reconnect the battery, and put the cover back on including screws. Power the system on and it should go to the ChromeOS Verification screen (Figure 13). Then back to the Welcome lets go screen (Figure 14). Figure 13:Chromebook OS Verification is OFF Figure 14: ChromeOS Welcome Screen Press the Ctrl + Alt + -> keys at the Welcome lets go screen (Figure 14) to access the CROSH command line (Figure 15): Figure 15: Access the CROSH command line Log-in with root - there is no password needed (Figure 16): Figure 16: Log in with root Scan or type chromeos–firmwareupdate –m recovery and press Enter (Figure 17): Figure 17: Scan or type chromeos–firmwareupdate –m recovery and press Enter Scan or type flashrom –p host ––wp–enable and press Enter (Figure 18): Figure 18: Scan or type flashrom –p host ––wp–enable and press Enter Scan or type flashrom –p ec ––wp–enable then press Enter (Figure 19): Figure 19: Scan or type flashrom –p ec ––wp–enable then press Enter Scan or type halt then press Enter (Figure 20): Figure 20: Scan or type halt then press Enter Wait for the Chromebook to power off. Power the Chromebook back on and re-enable the Operating System (OS) verification (Press spacebar then Enter) (Figure 21): Figure 21: Press the spacebar then Enter to re-enable OS verification The Chromebook can now be provisioned and deployed for normal use. To check the Read Only (RO) Firmware revision, end users must log in to the Chromebook and open a browser and type chrome://system. Scroll down until you see BIOS info and click Expand. The Read Only (RO) Firmware versions are listed under ro_bios_version (Figure 22): Figure 22: Check for the most current version of the Read Only (RO) Firmware. If you are still experiencing no power issues on the Chromebook 5190 or 5190 2-in-1 after performing the steps above, contact Dell Technical Support using the following link: Contact Technical Support.

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