$2$ blinks followed by a short pause, $5$ blinks, long pause, then repeats.

$[$ Choose$]$

$2$ blinks followed by a short pause, $1$ blink, long pause, then repeats.

CPU Failure

Invalid Memory installed

EC internal Failure; Generic catch$-$all for ungrateful EC code flow errors

$3$ blinks followed by a short pause, $3$ blinks, long pause, then repeats.

$1$ blink followed by a short pause, $1$ blink then a long pause, then it repeats.