computer comes on, log in, screen blinks on and off then goes back to login

[CLC11]

Chromebook

[Max3Aj]

@CLC11, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
If your HP Chromebook 14a-na0000 starts, lets you log in, then the screen blinks and returns to the login screen, it's likely a corrupted user profile, system glitch, or sync issue. Here's how to troubleshoot it:

Try Guest Mode

• On the login screen, click "Browse as Guest" at the bottom.
• If Guest mode works fine, the issue is likely with your user profile.

Powerwash (Factory Reset)

This will reset the Chromebook but can fix most software-related issues.

Warning: This will erase local data. Ensure your files are backed up to Google Drive or an external device.

Steps:

1. At the login screen, press Ctrl + Alt + Shift + R.
2. Click "Restart".
3. When prompted, select "Powerwash" > Continue.

Remove and Re-add Google Account (if you access it)

If you can log in occasionally:

• Go to Settings > People > Users.
• Remove the problem account.
• Reboot and re-add the account.

Try Safe Boot Mode

While not a formal "safe mode," you can press:

• Esc + Refresh + Power to boot into Recovery Mode.

Then, if needed, follow the prompts to reinstall Chrome OS using a recovery USB.

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support