This message was posted on behalf of Intel Corporation
Thank you for posting in our Intel ® Community.
I understand that you are facing boot issues with your Intel® NUC Kit NUC7i7BNH
In this case, based on the memory that you own, and the behavior of your Intel® NUC Kit NUC7i7BNH, the compatibility of the module should not be a problem as your model is listed on the Intel® NUC Kit NUC7i7BNH Compatibility Tool as a Intel ® Validated device.
The possible causes for the blinking light in a different pattern might be Memory module with wrong voltage, incompatible, or defective, however you state that your memory has been tested to be working fine.
May we know how did you test it?
Here is what you can try:
-Remove and reinstall the memory modules to make sure they're fully seated in the sockets.
-A pattern of three LED blinks during boot can indicate defective memory. To isolate a specific module as defective, boot the system with just one installed at a time. You can also try testing suspected defective memory in a different computer.
-If you installed one memory module in an Intel NUC that has two memory slots, try moving it to the other memory slot. Make sure to test slot one, closest to the motherboard.
Have you tested different cables/monitors?
I hope to hear from you soon
Diego Sanchez Campos.
Intel (R) Customer Support Technician
Under Contract to Intel (R) Corporation