Nuc 12 Enthusiast green light flickering on restart, no boot

[Sm1th]

Hello,

I just got this Nuc (NUC12SNKi72), freshly installed Windows 11 22H2. Every time I restart it hangs during POST and the little pinhole green light (the one under the power button) flickers forever and there's no video. I have to hold the power button for 12 seconds for it to shut off, then after I wait for a couple seconds, I can power it on and it boots fine. What can I do to alleviate this?

Other weird observations:

The Nuc 12 E download page has the latest BIOS of 0054, but the Intel Support Assistant downloads 0056. Everything seemed to go downhill after the ISA installed 0056.

[Steven_Intel]

Hello Sm1th,

Thank you for posting on the Intel® communities.

I am sorry you are having issues with yout Intel® NUC12SNKi72. I will be glad to assist you.

The download page shows the latest BIOS version is 0056 as shown here: https://www.intel.com/content/www/us/en/products/sku/196170/intel-nuc-12-enthusiast-kit-nuc12snki72/downloads.html

Please provide the following information:

• Does the blinking light behavior is similar to any of the ones listed under LED on power button flashes in the article Failed Boot Issues on Intel® NUC Products (https://www.intel.com/content/www/us/en/support/articles/000005845.html)?
• Is the issue happening since you first got the NUC? Was there any change before it started besides the BIOS update? 

Best regards,

Steven G.

Intel Customer Support Technician.

[Sm1th]

The frequency and length of the flashing has decreased, but I do notice it occasionally. I just watched it instead of resetting it and in eventually pulled out of it. Yes, it happened after the BIOS update, and I just got the Nuc a couple days ago. Next time it happens, I'll watch and count the flashes.

Yeah I noticed 0056 shows up in the downloads now.

Can you please help me understand the difference of the two lights on the front of the Nuc? There is a small pinhole led and a larger hexagon light. Thanks.

[n_scott_pearson]

To me, this sounds suspiciously like a RAM issue. Do you have different SODIMM(s) you could try?

If you don't have other SODIMMs, try running with only one SODIMM installed. If it works ok, switch to the other SODIMM and see if you can then repeat the issue (to verify that this SODIMM is responsible). Vice versa test if it fails with the first SODIMM you try.

Hope this helps,

...S

[Sm1th]

Thanks. I did try another set of RAM and used MemTest which passed fine.  I should try a different brand though, because I have two kits but they are both Kingston.

[OrneryOctopus]

I've recently run into what sounds like the same exact issue. Did you happen to get anywhere with this?

Thanks for any info!

[Sm1th]

I tried doing things to troubleshoot it, and never really got anywhere with it. I ended up just living with it for a time until it seems to have gone away. If it comes back, I just watch it and give it time and it eventually pulls through and boots finally. Still annoying though. Sorry I'm not more help.

Could the BIOS updates that have been released in the last 6 months have somehow helped? Not sure.