No Dual Channel on Asrock Z370 Killer SLI

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   Hello All!

I have some bad Problems with my brand new Asrock Z370 Killer SLI. I installed a new i5 8600k on board and tried to install 16 GB Crucial DDR4 - 2666 UDIMM 1,2 V CL19 Ram (2 sticks a 8 GB) [CT8G4DFS8266]. 

First i tried to install the sticks in Slot A2 and B2 but the computer didnt boot. So i tried to install in A1 and B1. Same result - no boot. 
After that i installed the sticks in the Slot B1 and B2 and finally it worked... but of course only in single channel mode.

In this forum i read about people having the same problem but i couldnt find any solutions.
I have the newest UEFI version (1.30) installed so i dont know what else to do. I also tried to set down the Mhz in Bios to 2400 Mhz but still no boot. 

Hope you have some help for me and sorry for my english.

Greets 

Oli

System:

Windows 10 64 bit
Geforce 970 GTX
i5 8600k
Asrock Z370 Killer SLI 
Crucial DDR4 - 2666 [CT8G4DFS8266]

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Hollyjoel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Feb 2018 Status: Offline Points: 7	Post Options Post Reply Quote Hollyjoel Report Post Thanks(0) Quote Reply Topic: No Dual Channel on Asrock Z370 Killer SLI Posted: 20 Feb 2018 at 4:11am
	Hello All! I have some bad Problems with my brand new Asrock Z370 Killer SLI. I installed a new i5 8600k on board and tried to install 16 GB Crucial DDR4 - 2666 UDIMM 1,2 V CL19 Ram (2 sticks a 8 GB) [CT8G4DFS8266]. First i tried to install the sticks in Slot A2 and B2 but the computer didnt boot. So i tried to install in A1 and B1. Same result - no boot. After that i installed the sticks in the Slot B1 and B2 and finally it worked... but of course only in single channel mode. In this forum i read about people having the same problem but i couldnt find any solutions. I have the newest UEFI version (1.30) installed so i dont know what else to do. I also tried to set down the Mhz in Bios to 2400 Mhz but still no boot. Hope you have some help for me and sorry for my english. Greets Oli System: Windows 10 64 bit Geforce 970 GTX i5 8600k Asrock Z370 Killer SLI Crucial DDR4 - 2666 [CT8G4DFS8266]

Hollyjoel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Feb 2018 Status: Offline Points: 7	Post Options Post Reply Quote Hollyjoel Report Post Thanks(0) Quote Reply Posted: 21 Feb 2018 at 2:53am
	bump

badbri Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 20 Feb 2018 Location: USA Status: Offline Points: 415	Post Options Post Reply Quote badbri Report Post Thanks(0) Quote Reply Posted: 21 Feb 2018 at 5:27am
	That particular Crucial ram is not QVL or verified to work on Asrock or Asus Z370 based boards from what I could find. So...Try one stick in A1 and see if it boots, remove the ram and try the other stick in A2 and see if it boots. Single sticks should boot in any slot if ram is compatible and mobo is good. Get Memtest86 (free) and burn to CD or USB and test one ram stick by itself in any slot that it does boot in. Remove and test other ram stick in same slot. If both sticks pass Memtest then the ram is good but not compatible with your board when running in dual channel mode.

Hollyjoel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Feb 2018 Status: Offline Points: 7	Post Options Post Reply Quote Hollyjoel Report Post Thanks(0) Quote Reply Posted: 21 Feb 2018 at 7:40pm
	Ok, thank you for your answer. i will test it today

Hollyjoel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Feb 2018 Status: Offline Points: 7	Post Options Post Reply Quote Hollyjoel Report Post Thanks(0) Quote Reply Posted: 22 Feb 2018 at 12:42am
	ok. if i install a single stick on A1 or A2 i cant boot the system. i sent the mobo back.