My Asus X99-A wont recognize all my ram

[Will Reierson]

So I just built a new pc, and it works fine except for the fact that not all of my Corsair Vengeance DDR4 ram is being recognized. I got 16 gigs in total (4 pieces of 4) and the computer is only picking up 8. I've tried swapping the modules around to see if any of them are dead, and that doesnt appear to be the case, so I'm completely stumped. The mobo I'm using is an asus X99-A and my OS is windows 7 home premium. Any ideas?

 

[dark_lord69]

Run memtest86 for 24 hours and see if it fails.
I had a stick of OCZ ram that failed fresh out of the box, it was DOA.

 

[RafaSimpsons]

Well, check the motherboard manual to see how you need to place your RAM sticks. Because sometimes there's a specific way of placing them. Or maybe they aren't well placed on the slot.

 

[Will Reierson]

Run memtest86 for 24 hours and see if it fails.
I had a stick of OCZ ram that failed fresh out of the box, it was DOA.

If you dont mind me asking where may I find this memtest86? I'm not entirely sure which one to download.

 

[Will Reierson]

Well, check the motherboard manual to see how you need to place your RAM sticks. Because sometimes there's a specific way of placing them. Or maybe they aren't well placed on the slot.

For my motherboard it says to install four sticks of ram in the slots A1 B1 C1 and D1, which I did. I'm also pretty sure I mounted it correctly as I re mounted them multiple times, but you never know.

 

[RafaSimpsons]

It's here: http://www.memtest86.com/download.htm#free

 

[maqueswell]

So I just built a new pc, and it works fine except for the fact that not all of my Corsair Vengeance DDR4 ram is being recognized. I got 16 gigs in total (4 pieces of 4) and the computer is only picking up 8. I've tried swapping the modules around to see if any of them are dead, and that doesnt appear to be the case, so I'm completely stumped. The mobo I'm using is an asus X99-A and my OS is windows 7 home premium. Any ideas?

Hello Will, I am having the same exact problem. I am on my 2nd board and it's doing the same thing, it's recognizing 3 sticks of memory now. The Asus technician informed me to update my BIOS version (it was 6 versions behind) and after the updates, it recognized only 2 sticks! So I am back to square 1 and Asus is preparing to send me another REFURBISHED motherboard!

Asus informed me that slot D1 was the memory test slot. Place each stick of memory in that slot. If it doesn't read it, then the stick is bad.

 

[handro]

Use the gray slots only. Two on either side of the processor.

 

[Will Reierson]

So I finally got the thing replaced, and it turns out that it was my motherboard. It works fine now, but thank you all for your awesome help! 😀