X99 (Taichi) - only seeing 48 of 64GB installed |
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parsec
Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996 |
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You lost me here. Did all this happen after trying to run the memory at 3000? Using the XMP profile? Or was still at 2400? That is not clear to me at all. So it went from working fine at 2400, with all 64GB recognized, back to 48GB and instability? That happened after you disabled MRC Fast Boot and enabled Memory Test? What was the difference between the completely vanilla BIOS, and setting those two memory options, that only have an affect during POST, in contrast to what you were using before that with the BIOS settings? Plus I thought it was the D4 slot that was being stubborn, not the D1 slot. Please, you must be completely specific about what happened. |
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mrmattk
Newbie Joined: 26 Dec 2016 Status: Offline Points: 10 |
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It's always been the D1 slot. the slots are A1 B1 C1 D1 and A2 B2 C2 D2. I'm populating A1 through D1. D1 intermittently recognizes the memory. Always sees it in System browser, but only intermittently shows up in the BIOS and is recognized as memory. Voltage defaults to 1.2V when in DDR2400 model.
It seems I get one boot right after CMOS reset where all 4 DIMMs show up, then a crash / freeze and on reboot only A1 through C1 show up as memory. Even if I shuffle the memory into different slots, same pattern of events. ------------------------------------------------ Here are the order of events from last night: Last night I reset the CMOS. Went into BIOS, turned off MRC Fast Boot, Turned on Memory test. All 64GB showed up in BIOS and Windows. (I declared victory!) I then rebooted to BIOS, set the memory to the first XMP profile (DDR3000). Wouldn't boot. Reset CMOS again. Set 2 memory settings in BIOS. So back to DDR2400. All 64GB shows up. Booted from USB and ran memtestx86 on 64GB of RAM. Froze. Rebooted. Booted from USB and ran memtestx86 again - but only on 48GB of RAM. |
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mrmattk
Newbie Joined: 26 Dec 2016 Status: Offline Points: 10 |
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Here's what I've decided to do...
1. I've ordered new RAM (Kingston Technology HyperX FURY Black 64 GB Kit CL15 DIMM DDR4 2400 MT/s Internal Memory (HX424C15FBK4/64)) 2. I've ordered a new motherboard that's compatible with the memory and the M.2 storage I bought. It's not an ASRock motherboard this time. 3. I set up a return for the Taichi and the original Kingston memory. I don't have to send it until Feb 1st. I'll test the new memory on the Taichi motherboard and see how it works. If it works, I'll send back the original memory. If it doesn't work, I'll try the new motherboard. I'll report back with results. Happy to try other solutions if you think of them in the meantime - new mobo and memory won't arrive for 2 days. |
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mrmattk
Newbie Joined: 26 Dec 2016 Status: Offline Points: 10 |
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New memory arrived today. I plugged it into the Taichi and it still only recognized 48 of 64 GB. I've decided to return the motherboard and replace it with an MSI X99A Tomahawk which has worked out of the box.
I'll assume it was a defect with my motherboard and not all Taichi motherboards. For the record, I tried to send in for technical support through the ASRock website and I never had a reply. Thanks for the help, I really appreciate that time that other users have put into the community here. |
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parsec
Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996 |
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Ok, we understand and can't blame you.
Sorry to hear you never heard from ASRock support. |
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