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The is an older device that often requires a methodical approach to recovery. By properly utilizing the Chromebook Recovery Utility and trying the 30-second TPM reset trick, many users are able to restore their devices without hardware replacement. If these steps didn't work for you, let me know: What does the screen say when you press TAB ? Have you tried both a USB drive and an SD card ? Samsung Chromebook recovery failure. - Google Groups snow fremont a-e 0878 download

This process can sometimes reset the EC chip (TPM security module): Some users have had success booting into a