Computer will not boot after installing new RAM

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Hi guys, I have recently purchased 2x4 GB of Ram from ebay and made sure it matched the ones I have currently installed. When I tried to boot PC after adding the 2x4 sticks to the free slots, it turned on but displayed nothing on screen and sat their making this very quiet click every few seconds.

Since having this issue, I have tried 1 stick of the current memory I had installed with one of the new ones using duel channel to check compatibility and it booted fine. I have tested every memory slot on the motherboard and all are working. I have tried both my old memory and the new memory separately in duel channel and they worked. I have also flashed the BIOS to the latest version since I checked and there was a BETA BIOS released supposedly fixing memory issues. Still no luck. I can only get the PC to boot in duel channel.

https://www.gigabyte.com/Motherboard/GA-Z97X-Gaming-3-rev-10#support-dl

https://uk.pcpartpicker.com/product/LzTmP6/gskill-memory-f312800cl9d8gbxl

Any help would be appreciated! Also, I know upgrading to beta BIOS isn't always a good idea, but I kind of had to see if it would fix my issue.

Edit: So I put all 4 sticks back in again this time putting the current ones in the second dual channel slot and the new ones in the 1st dual channel slot. It booted fine. Appears for whatever reason, the new sticks wanted to be in the other slots...any ideas as to why this was the fix?
 
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I downloaded the English manual from https://www.gigabyte.com/Motherboard/GA-Z97X-Gaming-3-rev-10#support-manual (you should probably do the same). On page 44 it shows that you can set channels A and B independently; you'll have to check the advanced timings for each memory kit (each kit should use its own channel) and then manually set the highest values that you find for each setting. The only way to get 4 modules to play well together is to buy a complete kit; what you're trying to do is challenging. You may also need to increase voltage a bit because driving 4 modules is more difficult on the memory controller (CPU).
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Will check and get back to you. I ran memtest and got like 9 errors and quit it before the test was finished. I was starting to think that I had bough a pair that were dying or something so went into bios and disabled the reset bios to optimised defaults and am now running memtest again. Will update with results.
 
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The only difference that I can see in CPU-Z is that the tRC (don't know what that is) is 33 on two sticks and 40 on the other two. Is this a problem?
 
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RyanTodd1

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Aug 14, 2015
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Hi TRC is the timing that both RAM modules have. The lower the better, my question, can the board you have on the device run both of the different speed modules? If it is an older board it may not be able to run as fast as the 33TRC? I wouldnt be entirely sure how to check this as i have never seen it mentioned anywhere on the motherboard tech specs...

just a thought.

However the errors sound like evidence to back up my theory that the board may have issues running them at those speeds or perhaps they are just faulty? I would check error codes and see if you can identify the issue down to a couple things from the codes.

Alternatively if things are working fine now, dont disrupt the piece and enjoy your new set of modules! haha!

Let us know what you do! :)
 
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haha thanks for the help! I have been getting blue screen in windows with a different error code each time. One time, I believe the error code had 'ddr' in it which was scary and made me do the mem test haha. What was interesting is that when I ran the memtest with 1 stick (trc 33) and another stick (trc 40) in dual channel, it had no errors. I only recieve the errors when running all 4 sticks together.

As for whether my motherboard can support trc 33, i guess it can since the trc 33 ones are my current RAM modules and been running fine for like 2 years.

My motherbaord is a Gigabyte GA-Z97X-Gaming-3

Thanks for your reply once again!
 
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RyanTodd1

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Aug 14, 2015
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Hey,

Quick thought, you said you only get the errors when running both sets in dual channel, are both SETS of modules running different speeds? Or are they different DDR ratings? That board from memory can only utilise DDR3 and the new ram modules cannot be DDR4 otherwise they wont be used by the board. However i dont think it will be different DDR's as they have different pin alignment i believe. It could be some damaged pins, id search at least one of the error codes or provide us with one next time it happens so we can check them and find a fix :)
 
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Thanks for the thought! They are both DDR3 modules. Do you mean the code i get when on blue screen or the code from memtest?
 
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Is there a tRC value in the bios that i can change or do i have to do some sort of calculation and then set timing accordingly?
 
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GhislainG

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I downloaded the English manual from https://www.gigabyte.com/Motherboard/GA-Z97X-Gaming-3-rev-10#support-manual (you should probably do the same). On page 44 it shows that you can set channels A and B independently; you'll have to check the advanced timings for each memory kit (each kit should use its own channel) and then manually set the highest values that you find for each setting. The only way to get 4 modules to play well together is to buy a complete kit; what you're trying to do is challenging. You may also need to increase voltage a bit because driving 4 modules is more difficult on the memory controller (CPU).
 
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