The power LED on the Intel® NUC blinks in a pattern if an error occurs during POST. Intel NUCs that include a front panel audio jack produce a beep pattern that you can hear through headphones, or speakers plugged into the jack.
Patterns and solutions
3 blinks (3 beeps)
On-off (1.0 second each) three times, then 2.5-second pause (off).
The pattern repeats until the computer is powered off.
|Memory error|| |
Make sure you are using the correct voltage memory for your Intel® NUC.
If the Intel NUC has two memory slots:
Off when the update starts, then on for 0.5 seconds, then off for 0.5 seconds.
The pattern repeats until the BIOS update is complete.
|BIOS update in progress||This pattern is normal behavior. No action is necessary.|
|2 red blinks |
Repeating pattern: on 2.0 seconds, then off 2.0 seconds.
|Computer is in Sleep mode (S3 state). This is normal operation.||This blink pattern can be turned off in BIOS: |
|1 blink every 5 seconds||Power-on circuit may have failed||Contact Intel Customer Support for assistance.|
16 on/off blinks (8 beeps)
.25 seconds on, .25 seconds off, .25 seconds on, .25 seconds off, for a total of 16 blinks.
Then the computer shuts down.
|CPU thermal trip warning|| |
Check that chassis ventilation holes are not blocked and unit has sufficient airflow.
|Troubleshooting BIOS Issues on Intel® NUC|
|Troubleshooting Memory Issues on Intel® NUC|
Still need help? Contact Intel Customer Support.