I have a NUC6I5SYH that I recently attempted to upgrade the FW. from SYSKLi35.86A.0070 to SYSKLi35.86A.0072. FW update was attempted through the F7 menu. Progress started successfully but eventually failed. I unfortunately did not get a screen shot of the error within the FW update screen. The FW update program eventually ended and I was able to exit without issue, i.e., I was able to initiate a graceful restart. Now, as stated in the title, it won't boot up to anything. Fan runs but no type of LED indicator on the front. I believe I've exhausted all the published troubleshooting steps like test for power source, video display, clear cmos, fiddle with security jumpers, remove all peripherals, remove disk devices, etc., same result. Is there any other tricks to try or do you think I have a brick on my hands now?
Thanks for the suggestion Leon but still no luck. Can't even get this thing to POST in order to get to a bootable device.
I happen to have another working NUC that I can swap in known good components like disk or memory dimms. I even tore the two apart to compare condition of the motherboard but I see no issues on visual inspection.
Have you tried powering on holding the power button down for a full 3 seconds? This should get you to the Power Button Menu. If you can get there, you can do a BIOS Recovery operation using the latest BIO file.