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HP Pavilion 14-c025us Chromebook support

Chromebook Does Not Start (Chrome OS)

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This document applies to HP Chromebook computers with Chrome OS.
This document provides possible solutions to Chromebook startup issues, including the Chrome OS is missing or damaged error condition. Follow the steps in this document step-by-step to help isolate the problem and find the most appropriate help.

Step 1: Remove external devices

If your Chromebook does not start, remove any and all USB devices, and remove memory cards from the card reader slot. Disconnect all non-essential devices (external hard drives, and similar).
After you have removed all external devices, turn on the Chromebook. What happens?
  • If the Chromebook starts, reconnect devices one at a time while restarting the computer to figure out which device is causing the problem. You are done.
  • If the Chromebook still does not start or exhibits the same problem, do not reconnect anything, and continue troubleshooting.

Step 2: Find a fix that matches your Chromebook's symptom

If your Chromebook does not start, read from the following list of symptoms. If you find a symptom that matches your computer's condition, then follow those instructions. A link may take you to another support document that contains detailed troubleshooting steps. If you cannot find a symptom that matches your computer's condition, then continue to Step 3: Perform a hard reboot .
If your Chromebook does not start and you see the message Chrome OS is missing or damaged. Please insert a recovery USB stick into one of the 4 ports in the BACK of the device. , perform a system recovery. See Performing a System Recovery on Your HP Chromebook for more information.
Figure 1: Chrome OS is missing or damaged
Chrome OS is missing or damaged error screen
If your Chromebook does not start and there is no noise from the computer fans, the LED lights on the computer do not illuminate, and the screen is black, follow these steps:
  1. Verify the computer is receiving power from the AC adapter .
    Verify that the AC adapter is not damaged and is connected correctly to a working wall outlet plug. Verify AC power is connected to the system board by examining the AC adapter, wiring, and pin connection for damage.
    Damaged components, like the AC adapter or the pin in the power connector, may require an HP-certified repair.
    Figure 2: AC adapter components
    AC adapter components
  2. Use a different AC power adapter .
    If you have access to a different AC adapter or power pack that is designed for the computer, connect it to the Chromebook and try to start the computer. If you own or have access to more than one notebook, verify that you are using the adapter which belongs to the Chromebook.
    CAUTION:Using a power adapter that does not meet the power requirements or has the wrong type of connector may damage the computer. Connecting the wrong adapter to the Chromebook may cause the power LED lights to blink but not power the computer.
  3. Remove the battery and boot on AC power only .
    A discharged or defective battery may prevent the AC adapter from supplying enough power to start the computer. To verify that power from the AC adapter is available for computer; remove the battery, connect the AC power adapter, and press the power button. If available, try using a different AC adapter that is rated for the computer, and repeat this test.
    • If LEDS do not glow and the fan does not spin, the AC adapter may need to be replaced.
    • If LEDs glow and the computer boots, the battery may need to be replaced.
    • If LEDs glow but computer does not boot, see Step 3: Perform a hard reboot .
  4. Remove the AC adapter and boot on battery power only .
    A defective AC adapter may not charge the battery, and can prevent the Chromebook from booting on battery power only. To verify battery power is available for the computer: connect AC power adapter, allow battery to charge for 30 minutes or more, disconnect the power adapter, and press the power button. If available, try using a fully charged battery of the same type, and repeat this test.
    • If LEDS do not glow and the fan does not spin, the battery may need to be replaced.
    • If tests of both the battery and the AC adapter fail, there may be a problem with the system board requiring service by HP.
    • If LEDs glow and the computer boots, the AC adapter may need to be replaced.
    • If LEDs glow, but computer does not boot, see Step 3: Perform a hard reboot .
  5. Check the AC adapter to make sure that it is plugged into the computer and the power outlet. Also check the adapter for signs of wear or damage. Replace a damaged adapter.
  6. Plug the adapter into a different power outlet and try to turn on the computer.
  7. If you have another AC adapter, plug it into the computer and the outlet and try to turn on the computer.
  8. If these steps do not resolve the issue, Contact HP .
HP Chromebooks use blinking LEDs to identify startup errors. If your Chromebook does not start and you see the LEDs blinking (usually 1 - 8 blinks in a series), Contact HP for assistance.
The codes are specific to individual computer models, and you will need to know your exact Chromebook model number when contacting HP.
NOTE:If a white LED near the AC power connector blinks when a new notebook computer is used for first time, the battery is still in Shipping Mode. To resolve, turn off the notebook, connect AC power and allow the battery to charge for at least 30 minutes, then start computer.
When you press the power button: LED lights blink or glow, a fan spinning sound is heard, but the display remains black, the notebook does not start.
If the computer is on, but the display remains blank, see Step 3: Perform a hard reboot .

All other Chromebook startup problems

For all other startup problems, see Step 3: Perform a hard reboot .

Step 3: Perform a hard reboot

A hard reboot can resolve many Chromebook startup issues. Follow these steps to perform a hard reboot:
  1. Turn off the computer.
  2. Disconnect all peripheral devices and remove all USB devices and media cards.
  3. Disconnect the AC power adapter and remove the battery .
  4. Press and hold the power button for at least 7 seconds.
  5. Reconnect the AC power adapter, but do not connect the battery.
  6. Turn on the computer.
    If the computer starts, you are done.
    If the computer does not start, continue with the next step.

Step 4: Perform a system recovery

If the steps in this document have not resolved the startup problem with your Chromebook, perform a system recovery to reset the computer to its original factory shipped state. For more information about Chrome OS system recovery, see Performing a System Recovery on Your HP Chromebook .
HP Pavilion 14-c025us Chromebook

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