we have the same configuration and I have the same problem. I have already contact Gigabyte ( waiting an answer) and Corsair that we have answered to check the QVL of MoBo. Unfortunately the RAM that I bought there aren’t in the QVL list. But before to change my RAM CMR32GX4M4C3200C16 (no compatible) I would to ask to Intel if 32GB 4x8 3200MHz are compatible with CPU i7 8700k 3.7GHZ 12MB cache, LGA 1151.
I have been in contact with gigabyte and they came back with checking each slot with one stick of ram which i have done with the two slots closest to the cpu not working. i have updated the bios and that never worked. they also asked me to check for bent pins on the cpu socket. i have just finished checking the socket (which ment draining the system ) and the socket is perfect.
so waiting for them to get back to me. it could be the memory even tho its on there compatability list.
This message was posted on behalf of Intel Corporation
Hi reaper_gfx: Thank you very much for contacting the Intel® Processor communities. We are sorry to hear the PC is not working properly.
In regard to your inquiry, the Intel® i7-8700K processor supports DDR4-2666MHz for memory RAM, to use the memory sticks at 3000MHz might be too much for the processor when using 4 sticks and this problem could be related to that:
As you mentioned previously, we recommend to use just one stick first, then keep adding the rest of them to identify if it is always the same stick the one that causes the problem, or also to confirm if the problem happens when using an specific memory RAM slot. If the problem happens randomly, when using different slots or sticks, then it could be related to processor or board.
At this point we advice to wait for further suggestions from Gigabyte, if you have the option to test your processor on a different board or test your board with a different processor, we will be able to identify the source of the issue, otherwise we can always replace the unit for you.
If you are interested in that option, please get in contact directly with Intel to verify if the processor is eligible for warranty replacement:
For phone support, depending on your location, you will see the contact information on the links below:
EMEA contact information: https://www.intel.com/content/www/us/en/support/contact-support/emea-contact.html
APAC contact information: https://www.intel.com/content/www/us/en/support/contact-support/apac-contact.html
LAR contact information: https://www.intel.la/content/www/xl/es/support/contact-support/lar-contact.html
North America: Phone Number 1-916-377-7000, Monday – Friday 7:00 AM to 5:00 PM (Pacific Time).
Any further questions, please let me know.
Thank you for the reply. I have just finished rectifying the problem. The issue was infact a bent pin on the CPU socket. Out of the systems i have built before using intel chip i have never bent a pin on a socket so i quickly dismissed the idea until i ran out of options on normal config/bios settings and bit the bullet and took the board apart in preperation for an RMA when i saw the pins bent over many of words ran through my head. But with a steady hand and a stanley knife blade i managed to get them back into position now all 4 ram chips are working as expected