HP Chromebook TPM read error

[Cearu]

Just recently my HP Chromebook 13 (G1) recently gave the ghost stating that "Chrome OS is missing or Damaged, Please insert a recovery USB or SD Card." The symptoms go as follow.

When I power on the Chromebook (whether opening the lid or hitting the power key), the lights come on, and then the screen turns on for about 1 second, then the screen shuts off and the computer turns off (lights go off activity is gone) for around 1.5 seconds. After that, the Chromebook turns itself back on and the screen comes on and stays blank for a second before the screen (in a slow manner starting from the bottom and working to the top) begins to slide an image of the error screen "Chrome OS is missing or Damaged, Please insert a recovery USB or SD Card." and it does this every time.

I first tried to follow googles guide and did every step to no luck. I Then went to do a factory reset, reboot into recovery mode and check developers options, and even went as far to recovering the OS with a flash drive, still the problem persists. I did hit {TAB] to see a little more information and found that it has a TPM read error.

Here's the full report below

________________________________________

HWID: KIP E5A-H8O-H4Q-A7H

recovery_reason: 0x54 TPM read error in rewritable firmware

VbSD.flags: 0x00002x50

VbNv.rwa: 70 10 00 00 00 02 00 00 00 00 00 00 00 00 00 8a

dev_boot_usb: 0

dev_boot_legacy: 0

dev_boot_signed_only: 0

TPM: fwver=0x0019002 kernver=0x00000000

gbb.flags: 0x00000000

gbb.rootkey: c788cee8c798669fe4822b7544dd3e399ce22604

gbb.revoery_key: 6eaa4b094cd75eacc0f2fa4516d33ed86ea6f3d2

read-only firmware id: Google_Kip.5216.227.25

active firmware id: Google_Kip.5216.227.25

___________________________________________________

I've tried numerous things

- I tried to factory reset

- I tried to hard reset

- I tried factory recovery via USB and SD Card

- Tried with and without OS verification 

- Tried the 30-second power solution (Turn the Chromebook off then turn it on, wait 30 seconds then turn it off and repeat) - I did this for about 35 times to no luck.

- I tried to power cycle (Press and release power button) for 10, then 20, and 30 times to no luck.

- One user suggested to rapidly press the power button about 10 times, this didn't either.

I'm kinda out of options, something tells me it's now a hardware issue or even if the Chromebook is bricked beyond repair. Can someone please help me out here? Thanks!

[FrostySnake]

Literally the exact same situation as you 

What made this happen for me was pressing escape refresh and power during the Enterprise enrollment loading screen. This is the one that you get after rebooting the whole device, for me which was back into verified mode after a failed attempt at activating dev mode, which is blocked. Now, I just finished logging in to my school account so that it knows you are part of the Enterprise. Right during the loading screen was when I hit the keybind for recovery mode, and it never booted normal again, it just went back to the missing or damaged screen whenever I tried to restart it. What's weird though is that although dev mode is blocked, like I said, when I tried (and failed) to recover the devices os with a recovery drive it says that I should turn os verification back on, and that I was in dev mode. When on the recovery screen that I can't get out of I can't Ctrl + d and reboot the device that way and switching dev mode back off (even though it's blocked so theres no way I could've gotten on it in the first place???)