New build won't boot with two sticks of RAM?

deadsa13er

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Hi all,

This is my build:

CPU: Intel - Core i5-8600K 3.6GHz 6-Core Processor
CPU Cooler: Noctua - NH-D15S 82.5 CFM CPU Cooler
Motherboard: MSI - Z370 SLI PLUS ATX LGA1151 Motherboard
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory
Storage: Samsung - 860 Evo 500GB 2.5" Solid State Drive
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive
Video Card: Gigabyte - GeForce GTX 1080 8GB WINDFORCE OC 8G Video Card
Case: Fractal Design - Meshify C Dark TG ATX Mid Tower Case
Power Supply: Corsair - RMx 550W 80+ Gold Certified Fully-Modular ATX Power Supply
Operating System: Microsoft - Windows 10 Home OEM 64-bit

This is my first PC that I've built so I know literally nothing it feels like. I had everything connected but the PC wouldn't post upon first boot. My Motherboard was flashing that the RAM wasn't working so I removed the second stick and managed to get it to post.

In terms of troubleshooting I've switched around the sticks and they both work individually, they just don't work alongside each other.

What do you recommend I try? Would there be some options in BIOS?

Thanks.
 
Solution
Take one of the sticks and check each of the RAM slots separately. If all slots work, then you got a faulty kit (sticks in kit should work with each other but sometimes they will not) and you should RMA ram. If the board fails to boot with one stick that means used slot is malfunctioning; in such case common problem are bent CPU socket pins.
Take one of the sticks and check each of the RAM slots separately. If all slots work, then you got a faulty kit (sticks in kit should work with each other but sometimes they will not) and you should RMA ram. If the board fails to boot with one stick that means used slot is malfunctioning; in such case common problem are bent CPU socket pins.
 
Solution

deadsa13er

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@t53186 @SkyBill40 @Snipergod87

I did put put them in the recommended slots in the manual, A2 and B2.

Am I able to run Memtest86 after installing Windows? If so I'll try it now.
 

t53186

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Memtest is a standalone program that does not require windows or any operating system, and you wouldn't be able to test memory that's being used by windows.
 

deadsa13er

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So I did as you suggested, and I found that the 3rd and 4th slots don't work at all even with just 1 stick in. I can get it to boot if I put the sticks in the first two slots, however only one of these slots is a recommended slot.

My question is, is much performance lost by having one stick in an unoptimised slot? Would it be worth returning the motherboard for a new one?
 


If you've got a bad slot and have confirmed as much through testing, I'd return it via RMA. I'm hopeful that you're still in your warranty period.
 


Check for bent socket pins first. If there are any, you can try to fix it. If none found, best way is to RMA motherboard. It is not even a matter of performance lost, but more hurts that you will not be able to expand your RAM later with only two working slots. For games it may not matter that much if RAM is in dual channel or not, but for some other programs difference is big.
 

deadsa13er

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Do you mean bent pins on the motherboard where the CPU goes?
 

deadsa13er

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OK I'll have a look later. If there's no bent pins then I'll send it back.

Thanks for your help!