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Can't boot with new 16gb Corsair Vengeance memory

Posted on 2014-04-22
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Last Modified: 2014-04-24
Hey TT, My computer wouldn't boot even to bios. I tested the memory (memtest86) 1 stick at a time & it was fine. It turned out the second memory slot ,A1, was shot. I could boot with three sticks in any combo but not in that slot. So I  bought 16gb Corsair Vengeance memory, 2x8. I wanted more than 6gb. I put the memory in slots A2 & B2  and it beeps once goes to post but keeps going through the Asus mem ok routine.  I tried one stick, different slots, same thing. Any help would be greatly appreciated.
Thanks Ed  

My specs
latest bios
Asus p7h57d-v evo mobo
i5 K 655
8 gb Corsair Dominator 4x2  cmz16gx3m2a1600c10 10-10-10-27
Intel 180 ssd
WD 1.5 tb hd, WD 1.5tb hd Seagate 1tb hd
2 x EVGA 560ti sli
Creative SB Titainium X-Fi Fatality
Pioneer blu ray burner
Sony dvdrw

Thermaltake Toughpower Grand 1050w
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Question by:Etrix
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Beartlaoi earned 500 total points
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That motherboard may not support 8GB DIMMs.  Look at the user manual section 2.4.2, there are no 8GB dimms in the list, largest are 4GB
Also in case you adjusted the memory settings, set them to default to verify that you are not using speeds or voltages that the DIMM does not work with.
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by:Etrix
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Thanks Beartlaoi, I tried the default settings. Corsair Vengeance 16 2x8 has been listed on numerous sites as being compatible. They all agree that it's a pain to get it working, but they didn't say how. I'm still looking.
Thanks
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by:Etrix
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These timings go to the new Vengeance ram not the Dominator
10 10-10-10-27
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The number you gave is for:

Vengeance® — 16GB Dual Channel DDR3 Memory Kit (CMZ16GX3M2A1600C10)
http://www.corsair.com/en-us/vengeance-16gb-dual-channel-ddr3-memory-kit-cmz16gx3m2a1600c10

not the 8 gb Corsair Dominator 4x2

the specs are listed as:
Memory Size --    16GB (2 x 8GB)
SPD Latency --      9-9-9-24
SPD Speed --        1333MHz
SPD Voltage --      1.5
Speed Rating --    PC3-12800 (1600MHz)
Tested Latency -- 10-10-10-27

Since they seem to be trying to boot, I would manually go with the1333MHz, 10-10-10-27 timings, and set the voltage to 1.55v, and see what happens. If no go, try 1.6v.
If still no go, set them down to 1066Mhz.

You also might look around for a setting to "unlock" the ram from the cpu.
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by:Etrix
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Thanks coral47,  Thanks for the info. I'll be home in a few hours & can't wait to try your suggestions.
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by:Etrix
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Tried 1333MHz, 10-10-10-27,voltage 1.55v & 1.6v. Still not working. I'll keep trying. I got a few more things to check out.
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hmmmm...

I will try to look through the manual tomorrow, and see what's there.
In the meantime, you might try the "auto" over-clock feature in the BIOS.
I think Asus calls it AI?
I have had a little luck doing that in various motherboards , while trying to figure out what settings needed to be tweaked.

As a side note, it might be more trouble than it's worth to get two 8gig sticks to work reliably. You might be better off with three 4 gig sticks, and just make do with 12gigs total.
I don't know if that is feasible for your needs, though.
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by:Etrix
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Thanks I Beartlaoi, just found out the same thing.
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