Question Cannot get RAM to work

darkparadox

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Sep 20, 2008
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Hello,

Trying to get my RAM setup correctly, would appreciate any help.

My motherboard - https://www.asrock.com/mb/Intel/Fatal1ty Z87 Killer/

I am using windows 8.1. My BIOS is the latest update. I went into Msconfig and assured that limited memory is not checked.

Trying to setup three 4GB RAM sticks. Two of which are identical and one is the odd man out. All are the same manufacture. At one point everything was working correctly (within the last year) but after reinstalling windows I've just now noticed it refuses to work.

All three RAM sticks work independently. All of the slots work. It does not matter which combination of RAM I use, however, once powered on it will only read the RAM seated in slots 2-4 (the priority that my motherboard states), or slots 1-3. If I remove the RAM and re-seat them, and enter BIOS it will read the full 12. But after I power on, and re-enter windows / bios goes back to only reading 8. My BIOS shows what is seated in each physical slot of the motherboard, and it does detect all three RAM. I've downloaded CPU-Z which tells me I do in fact have the 12GB of Ram.



Really at a loss now. driving me nuts
 
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darkparadox

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This combination worked flawlessly for months on end. What should I try in respect to compatibility testing ?

What are you normally suppose to do, if you try to upgrade you RAM down the road and the originals are no longer sold
 
Memory is guaranteed in the form sold. Other combinations you decide to make have no guarantee to be compatible together.

Adding extra memory often causes it and the existing memory to no longer be able to operate at rated specifications.

Workarounds to get extra memory working include:
Lower memory clock speed
Relax DRAM timings
Increase DRAM voltage.

Use of identical, exact match, same thing have no guarantee to be compatible together. Such combinations may raise the odds of the memory working together over the use of random modules.
 

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