Unable to run my Corsair Vengeance pro in dual channel with my MSI Z97 Gaming 5 Motherboard

[Mohsin Naqvi]

Hello everyone

I have lurked in the shadows at Tom's Hardware for years and finally I have emerged to ask a question which I can't seem to find the answer to. I have recently upgraded to a MSI motherboard and everything seems to working fine.
when I place the ram in DIMM slots 2 and 4 which are recommended by MSI to run in dual channel. my onboard led shows me and error 2b (or 26 i can't tell). if i try to place it in DIMM slots 1 and 3 i get the same error. however if i placed the sticks in slot 1 and 2 the computer boots up just fine and everything runs smoothly except it's not in dual channel can't some help me out. Thanks

CPU: 4790K
Motherboad: MSI Z97 Gaming 5
RAM: Corsair Vengeance pro 1600 Mhz

 

[bootcher]

Have you run a memtest to rule out a bad memory module?

 

[scout_03]

page 1-30 of motherboard user manual give the bios code and do memtest as suggested .

 

[Mohsin Naqvi]

thank you for your quick responses, however the page doesn't list the code i mentioned above. also I have done a memtest and it found no errors. I do want to mention this though, which i was looking at my system config under AIDA64. It shows that both of my sticks are running under "ChannelB-DIMM0" and "ChannelB-DIMM1" and both of the Channel A-DIMM0 AND 1 are empty. I am wondering if for some reason the ChannelA is disabled. is this something I can manualy enable or disable?

 

[scout_03]

check in the manual if there is not a bios settings for dual .

 

[alexoiu]

If using single RAM module, inserted in slot 3 or 4, does the system boot?

 

[Mohsin Naqvi]

the system doesn't boot if there is memory stick inserted into the slot 3 or 4 and I get the code 2b or 26 (i dont know if it is b or a 6).

 

[alexoiu]

Then I suggest removing the CPU and checking the socket for bent pins.