Symptoms

The Chromebook 3120 may stop responding during the No Power-On Self-Test (POST) stage of restarting after an image update. The Chromebook turns on but stops responding before video is displayed on-screen after an update using either a USB drive or the Auto Update. Note: Some people may mistakenly believe that their Chromebook is Not Powering on. This is not what is happening. A No Power is where there are no signs of life when the AC adapter is connected or you press the devices power button. However, the Chromebook involved here is giving signs of life before it stops responding. It does not finish booting into Chrome, so it is a "No POST" issue you are experiencing.

Cause

The turn off (Power down) sequence does not meet Intel's specifications because of an abnormal cold reboot. The Central Processor Unit (CPU) stops responding the next time the Chromebook starts up. When the Chromebook stops responding, it displays No POST symptoms.

Resolution

Using the ChromeOS Automatic Update Resolves the Start Up Issue A solution to this problem is in Firmware version 15217.504.0 for the R124 Auto Update. (Which was released starting from the beginning of June 2024.)

Support Cases