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Also onyl half of my RAM shows up with Asus P87567 Pro

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March 3, 2011 8:22:03 PM

Hello,
I just built a new PC and only half of my memory shows up. My build is

-Sandy Bridge i7 2500k
-Asus p8p67 PRo
-2 x Mushkin Enhanced Silverline 8GB (2 x 4GB) 240-PinDDR3 1333 totaling 16 GB Ram only *gb being recognized
a b V Motherboard
March 4, 2011 7:51:14 PM

Is it recognized in the BIOS or CPU-z? Is it seated correctly?
March 11, 2011 1:21:57 AM

sometimes it shows up as 16 GB and sometimes it shows up only as 8 GB in both the BIOS and in Windows. I pulled out all the RAM and re-installed it the first time I noticed that only half the memory was showing up, and then it showed up as 16 GB. but then the next time I restarted it, it showed up as 8 GB again. I tried using memtest after mounting it to a disc, so I can see if it is the memory that is faulty, but could not successfully boot computer from disc. I think windows 7 OS disc, has a memory detector but I don't have the physical disc. Any suggestions? I am new to PCs.
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a b Ĉ ASUS
a c 107 V Motherboard
March 11, 2011 2:13:29 AM

Try increasing the DRAM Voltage to 1.6v and see if that fixes it. Many boards need extra voltage to work correctly when all memory slots are filled.
a b V Motherboard
March 11, 2011 3:01:59 AM

Are the contacts clean?
March 11, 2011 4:44:21 AM

that's a good point. The Memory was brand new, but I will check. thanks.
March 21, 2011 2:16:26 AM

I used memtest and it showed 16 GB of memory cached. I went into BIOS and increased DRAM voltage to 1.6 v. It still shows up as 8GB of memory sometimes in BIOS and in Windows Control Panel. I bought some rubbing alcohol to try to clean the contacts but since it showed up in memtest, I figure it is a BIOS problem. I have NOT updated the BIOS. Can this solve the problem?

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a b V Motherboard
March 21, 2011 4:29:43 AM
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Try it. It may solve it, but possibly not.
March 28, 2011 1:11:17 AM

Best answer selected by abcdethan.
!