Only 16 out of 64gb of Ram working

[ArmoredGorilla]

Hey Guys,

Managed to build a new workstation w/o destroying any parts (afaict so far).

Only problem is: I installed 64gb of ram, but the bios and windows are only registering 16gb.

Any ideas on what this could be? Thanks in advance for your help and here is the build:

• 
  Intel Xeon E5-2699 V4 2.2GHz 22-Core OEM/Tray Processor
  
  Asus X99-E WS/USB 3.1 SSI CEB LGA2011-3 Motherboard
  
  Corsair Vengeance LPX 64GB (8 x 8GB) DDR4-2400 Memory
  
  Samsung 960 Evo 500GB M.2-2280 Solid State Drive
  
  Western Digital Gold 6TB 3.5" 7200RPM Internal Hard Drive
  
  Corsair 860W 80+ Platinum Certified Fully-Modular ATX Power Supply
  
  Microsoft Windows 10 Pro OEM 64-bit

 

[Jwpanz]

Can you see all 64GB of your RAM in the BIOS?

 

[ArmoredGorilla]

Nope, bios was only seeing 16gb as well.

Could it be physical? maybe I should just re insert the sticks?

 

[manv]

--------------------

 

[ArmoredGorilla]

Ok thanks, sounds like that's probably it.

I'm not up to date or very tech savvy to begin with, so what does that mean exactly?

and it sounds like there's probably no realistic work-around, right?

 

[ArmoredGorilla]

Also, why wouldn't pcpartpicker have notifed me of that incompatibility when it saw I'd chosen 64gb or memory?

 

[Paul NZ]

Well it wouldnt have 8 slots if you couldnt use all of them. Try updating the BIOS

 

[manv]

----------

 

[Rogue Leader]

Your CPU only supports quadchannel memory and not octa- channel.

There is no such thing as octa-channel. The memory slots are paired up putting 2 dimms in the same channel.

Also, why wouldn't pcpartpicker have notifed me of that incompatibility when it saw I'd chosen 64gb or memory?

Because thats not the problem he made that horsehockey up.

Have you physically checked that all memory was fully inserted and locked in place?

 

[manv]

Well it wouldnt have 8 slots if you couldnt use all of them. Try updating the BIOS

Your CPU only supports quadchannel memory and not octa- channel.

There is no such thing as octa-channel. The memory slots are paired up putting 2 dimms in the same channel.

Also, why wouldn't pcpartpicker have notifed me of that incompatibility when it saw I'd chosen 64gb or memory?

Because thats not the problem he made that horsehockey up.

Have you physically checked that all memory was fully inserted and locked in place?

Ohh
Guess I mixed up memory slots with channels

 

[ArmoredGorilla]

Yeah, asked the tech guy at work and he also said to check physically that all sticks are properly inserted.

Don't have time to open it up tonight unfortunately,

So I'll give it a try tomorrow and report back here.

Thanks everyone for your thoughts, I'll be back soon

 

[Rogue Leader]

Let me know, theres a good chance some or all are not locked in place. ASUS has kind of a weird setup, pull open the latch on one side, slide in the ram on the other, and then push it down, hard, on the latched side till the latch locks in place.

 

[geofelt]

According to the corsair ram selection guide, your ram kit is compatible.

Check that all the ram is properly inserted. Try it again.

Run cpu-Z, it identifies what ram is inserted in each slot.
If you are missing a stick, it will help you identify which slot is suspect.

Check to see if there is a motherboard bios that addresses your issue.
DO NOT flash the bios on speculation; a failed flash can brick your motherboard.

Call Corsair support.

 

[Paul NZ]

Thats what crashfree bios and flashback are for

 

[ArmoredGorilla]

Hey again. Happened to wake early so I gave this a shot. turns out that yup, they just needed to be physically re inserted. Wasn't easy b/c they're under the cpu cooler, which is the size of a cinderblock. but yeah, everything seems operational now. Much thanks for all your help everyone!