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Could you provide us with the memory part number?
Have you tried to boot the unit with one memory at the time? Please use the DIMM closest to the board
If possible, could you try to boot the unit with a different memory?
Please let us know the outcome.
Only memory modules with SDRAM Density of 4Gbit and 8Gbit are supported in NUC6CAYH. Please count the SDRAM Devices (black memory chips), attached on both sides of the memory module printed board. Probably that your memory consists of 16 chips (8 on each side), therefore the SDRAM Density is of unsupported 2Gbit Density (4GB = 4096MB :16 = 256MB/Chip 256MB x 8 = 2048Mbit = 2Gbit/Chip)
The memory I have consists of two sodimm each of 4gb making up 8g
Each sodimm has 8 chips on the front and 8 on the back, hence 16 chips each sodimm - 32 chips in total for both sodimm
This is the link to the memory
I've tried just having one sodimm installed but the same error
Any advice please
Hopping that my explanation is clear. You have incompatible memory modules. If the memory module consists 16 chips for 4GB size, that means that you have memory with 2Gb SDRAM density. See the Product Specification https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC6CAYS_NUC6CAYH_TechProdSpec.pdf , para. 1.4 on page 19 for additional explanation. When you will replace your memory please check Intel Validated Memory list for your NUC: http://compatibleproducts.intel.com/ProductDetails/ExportPeripheralInfo?moduleName=Intel%C2%AE%20NUC&productType=Kits&pr…
For example this product is compatible (consists of 8 SDRAMS chips - 4 on each side): https://www.amazon.com/Crucial-PC3L-12800-Unbuffered-SODIMM-204-Pin/dp/B00BP501AS/ref=sr_1_5?ie=UTF8&qid=1522403228&sr=8…
The P/N is CT2KIT51264BF160BJ
However be careful, the following product is not supported (very similar, but consists of 16 SDRAMS - 8 on each side): https://www.amazon.com/Crucial-PC3-12800-Unbuffered-SODIMM-204-Pin/dp/B005LDLVAO/ref=sr_1_2?ie=UTF8&qid=1522403228&sr=8-… The P/N is CT2KIT51264BF160B (without "J" in the end).