NUC6I5SYH - Won't boot, no front LED indicator. Looking for other troubleshooting tips

RCurr3 · ‎03-09-2020

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?

n_scott_pearson · ‎03-09-2020

Do a H/W-level CMOS reset by unplugging the CR2032 battery from the board for 15 minutes.

...S

RCurr3 · ‎03-10-2020

Great suggestion and one that I had overlooked. I gave it a try and unfortunately still no luck. Thank you for the suggestion.

LeonWaksman · ‎03-10-2020

Prepare bootable USB with iFlash utility and Bios file on it.
Remove the System SSD and insert the above USB in rear USB port or in front yellow USB port.
Power on NUC and see if it is booting from this USB. If yes, recover Bios using iFlash.
Refer to iFlash Bios Update Instructions.

Leon

RCurr3 · ‎03-11-2020

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.

n_scott_pearson · ‎03-11-2020

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.

...S

RCurr3 · ‎03-13-2020

The power menu option will not come up. To make sure I was doing the procedure correctly I did test on another nuc so I know what it should look like.