Boot Failure with I7 4790K - Gigabyte Z97P-D3 - Corsair Vengeance 2400mhz

[Angelo_22]

I recently bought a new set of Corsair Vengeance Pro DDR3 at 2400Mhz 4x8GB. I am almost sure they are compatible with both motherboard and CPU, I checked at their respective websites. I have tried both setting up the voltages myself and using just the XMP profile that comes with the motherboard without changing anything else.

I am getting a Boot failure in both instances. At times (i guess when the motherboard detects an incorrect voltage) the motherboard does not save the changes at all and continues to beep when i restart it without saving my options. At other times it saves the settings and just does not boot, showing up a message "Boot Failure" on the screen and bringing me back to the BIOS.

The settings i have tried are compliant with what's written on the RAM: 2400mhz, 11-13-13-31, 1.65V. (although the motherboard doesn't let me select 1.65V there is a 1.66V option; unless i am using XMP which goes to 1.65V by default)

Now I am pretty sure the CPU is not overclocked because i left everything as it was by default, and also I kept resetting the BIOS every time to see if the RAM would work.

The only instances the RAM is working is when it doesn't require a change of voltage, 1333mhz and 1600mhz (which is what I am currently using).

Do I have to set anything else on the CPU? Is the mother board's bios version faulty? ( i am using F9b which is a beta)

I was going to try some memtest to see that the memory is not faulty but other than being brand new, it is also perfectly working at 1600mhz showing the full 32GB.

 

[cin19]

May use one stick RAM, set up the XMP in the BIOS. Save and exit. Shut down the PC, then add one stick RAM boot up the PC to see your PC can boot or not.

If it does, repeat the step to add the RAM one by one. If it does not boot, try manually set the timing to 11-13-13-37, 1.66V in the BIOS. And boot the PC to see what happens.

 

[Angelo_22]

May use one stick RAM, set up the XMP in the BIOS. Save and exit. Shut down the PC, then add one stick RAM boot up the PC to see your PC can boot or not.

If it does, repeat the step to add the RAM one by one. If it does not boot, try manually set the timing to 11-13-13-37, 1.66V in the BIOS. And boot the PC to see what happens.

Ok thanks for the tip. I tried changing the variables three times and something strange happened. I initially put one at 2400 with the xmp profile and it worked. I ran cpu-z and the XMP profile seems to give me all the options I needed. (timings, frequency and all)I put the second one in on the second slot and got a boot failure. I then decided to put the second one on the third slot because of the dual channel capabilities of the motherboard, and it worked. Now I have 16GB of the 32GB working at 2400mhz.

If I then put a third one (in either one of the 2 remaining slots the pc still doesn't boot. The fourth one gives me boot failure too.

For the final try, I decided to put the 2 8GB Ram in the 2nd and 4th slot, thinking that it might have something to do with the 2nd or 4th slots not working properly. But the PC still turned on without any errors. Thinking again it couldn't have been that the slots were malfunctional because I was running the full 32GB without any problems at 1600mhz. So my guess is: either the motherboard doesn't support 32GB at 2400mhz for some reason (even though the website says it does) or I am setting something incorrectly.

 

[cin19]

Try update the chipset driver, also maybe the BIOS too.

You may manually set the RAM speed at 2133mhz, 10-12-12-30.

 

[Angelo_22]

Thanks for the suggestion bu everything is already updated, f9b is the latest bios version and i also have the latest chipset drivers. After What just happened i am more inclined to think that my motherboard doesn't support CMY16GX3M2A2400C11R, even though the leaflet says complete support for CMY16GX3M2A2400C10R for all the 4 slots... The memory worked just fine at 2133mhz with the timings you have given me and 1.66V. When i try to crank it up to 2400mhz it just fails to boot.

 

[cin19]

That means the ic chip on the memory is not good enough. May contact corsair for replacement. You should be able to run the 2400mhz on those RAM.

 

[Angelo_22]

That means the ic chip on the memory is not good enough. May contact corsair for replacement. You should be able to run the 2400mhz on those RAM.

Ok I will contact them, they should replace it as i bought it just one week ago. But still isn't it strange that the pc boots when there is only 2 of them?