RAM not fully detected

[Pedro Estima]

Hi,

Specs:
Intel i7 5820k
Asus x99 deluxe
16Gb Gskill DDR4 2400Mhz
AMD R7 270
XFX 750W XXX
Windows 8.1 Pro x64


I finished building my new desktop a few days ago. At first I had some problems as the computer would automatically restart with Blue screen.
I ran memtest86 and the first time I got and error in the test. I swapped the sticks place and made sure everything was clean. This solved the problem.
Yesterday, it was only recognizing 12Gb of RAM or 3 sticks. The A1 socket was not recognized.
Today I turned on the pc again and it was only recognizing 8Gb. The A1 and C1 were not recognized.

CPU-Z and Asus AI Suite can both detect the 4 RAM sticks inserted in the socket but neither the BIOS nor Windows can detect them.

I tried changing the sticks place. Used only one at a time and all of them were working fine. I also updated the BIOS to the lastest option (0904) and even tried to clear CMOS on the board.

I have no more ideas.I can add some screenshots if needed. If anyone can help me I'll be very gratefull.

 

[el_cangrydmanati]

I had a similar problem when I reseated my i7-5930K. A bit of plastic debris hit one of my pins, so the RAM on DIMM_C1/D1 was not fully registering in the BIOS. My BIOS would only detect 8GB or 16, and the sticks would show up in BIOS reading "(Blank) GB, (Blank) Hz". Windows only recognized 8GB, but CPUID would show 16GB as being plugged in.

Switching the sticks did nothing. as the sticks were all perfectly fine, it was a bad pin (or pins) that weren't reading DIMM_C1/D1.

I recommend reseating your CPU and checking for any lint/dirt/debris or bent pins.

Intel i7-5930K
Kraken X61 280mm CPU Cooler
ASUS X99-Deluxe
16GB (4x4) Corsair LPX DDR4 3000MHz
Dual 7970 in crossfire
Corsair H1000i

 

[el_cangrydmanati]

I did but tlis the overclo yea sound stipid asus ws x99 dosent support oveclok memory ove 2666 v1.2 if u put the memory at that speed well do that dosent over clok well even some time i leve like that at 2133 well detect all the memory 16 at 2666 xmp well do eror code b7 even whit svd diable whit u have to is u overclok on this board and m.2 is not to friendly well do a window error evry time just im goin to ge anothe board like the msi x99 godlikegaming or the ramoage v is nothing u could done i did evryting even clennin the cmo reset i juts i wont go more mu conluxsion is in to they dont fix thia board sont get or change fo ovecloking one this motherboard they do thia alot disapper the ram how xalle ghost ram

 

[IanLiv]

Having the same problem with Crucial Balistic 2400Mhz 64gb - had this with two separate boards too - have tried disabling DRAM SVID Support but it won't let me override the voltage, box is fixed on Auto there's no dropdown... any ideas? Thanks in advance,
Ian

hope this answer helps. I have a asus x99-pro motherboard with Ballistix 32gb of DDR4 ram and I had a relatively similar issue. The motherboard was only showing 16gb/32gb. I found the following post to be helpful:

ChrisVTR says:

I had a similar problem with 64Gb of Crucial Ballistic 2400Mhz and an Asus X99E-WS. It would detect only 32Gb or occasionally 48Gb. Upping the DRAM voltage sorted it for me. 1.28-1.29 meant that it would sometimes detect all 64Gb, I had to go to 1.30 for it to detect all 64Gb on every boot.

I went into the AI Tweaker or Asus UEFI Bios Utility and disabled DRAM SVID Support. Then I entered 1.3 for the DRAM Voltage (CHA, CHB) and DRAM Voltage (CHC, CHD)

Saved and restarted, then BAM! 32GB of RAM!!!

Thanks ChrisVTR

 

[el_cangrydmanati]

Having the same problem with Crucial Balistic 2400Mhz 64gb - had this with two separate boards too - have tried disabling DRAM SVID Support but it won't let me override the voltage, box is fixed on Auto there's no dropdown... any ideas? Thanks in advance,
Ian

hope this answer helps. I have a asus x99-pro motherboard with Ballistix 32gb of DDR4 ram and I had a relatively similar issue. The motherboard was only showing 16gb/32gb. I found the following post to be helpful:

ChrisVTR says:

I had a similar problem with 64Gb of Crucial Ballistic 2400Mhz and an Asus X99E-WS. It would detect only 32Gb or occasionally 48Gb. Upping the DRAM voltage sorted it for me. 1.28-1.29 meant that it would sometimes detect all 64Gb, I had to go to 1.30 for it to detect all 64Gb on every boot.

I went into the AI Tweaker or Asus UEFI Bios Utility and disabled DRAM SVID Support. Then I entered 1.3 for the DRAM Voltage (CHA, CHB) and DRAM Voltage (CHC, CHD)

Saved and restarted, then BAM! 32GB of RAM!!!

Thanks ChrisVTR

 

[el_cangrydmanati]

Systeam agen vold putte at 1.02 then go insaide for cpu power managemen and disable not the las one the one befero sory for my inglish in goin to tray to explain the best i can for ram vokatage start at 1.4 and then go down frome there then u well see all u ram whit out b7 error

 

[el_cangrydmanati]

Yea my ws did at 3.4 not that stable 2666 sommetime go crazy i put the volatage at 1.4 bam no porblem