Troubleshooting tips for when you see 3 blinks on your power LED during startup.
The power LED on the Intel® NUC blinks in a pattern if an error occurs during POST with On-off (1.0 second each) three times, then 2.5-second pause (off). The pattern repeats until the computer is powered off.
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.
Make sure you are using the correct voltage memory for your Intel® NUC.
If the Intel NUC has two memory slots:
It's rare that this blink pattern would appear on an Intel NUC that has the memory modules soldered down on the board. If it does, it likely means the soldered down memory has failed. In this case, contact Intel Customer support using the link below.