Question System not POSTing, DRAM light - only without a specific second DIMM

[patrickpmueller]

I'm relatively new to PC building, but this is my forth build so far.

I have two RAM kits, one in my personal rig that works fine, 2x8GB Crucial DDR4-3200 CL16; the other is a 2x16GB kit, also Crucial, DDR4-3200 CL22. The RAM is brand new, the motherboard isn't, but is working fine with my RAM
The issue occurs on a Gigabyte H370 AORUS GAMING 3 WIFI. If I insert only one 8GB module, the system POSTs normally, and if one or two 16GB DIMMs are inserted, the system POSTs normally and all 40GB are detected in BIOS. However, if I try to power up the PC without my personal 8GB module, it doesn't POST, no matter which stick in which slot, or a combination of the two. The DRAM light is solid amber - but the RAM works as it is recognised by the motherboard.

I've never heard of this issue before - so my questions are:

• What causes this issue?
• Is there a simple fix?

Thanks a lot!

 

[Lutfij]

Welcome to the forums, newcomer!

2x8GB Crucial DDR4-3200 CL16; the other is a 2x16GB kit, also Crucial, DDR4-3200 CL22.
You have two kits of ram in your system. I'd advise working with one ram kit, preferably the higher capacity kit. As it stands even if you placed in the highest spec'd processor on that socket, your chipset won't allow you to go beyond DDR4-2666MHz.

What BIOS version are you on for your motherboard though?

 

[patrickpmueller]

Thank you for the quick answer.

Sorry for my vague description, I have two ram kits, and my goal is to have one in each computer. My personal computer (working) has the 2x8GB kit in it, while the new one is meant to have the 2x16GB kit. However, the system doesn't POST if I have only the 16GB sticks in it, the system doesn't POST - it needs an 8GB stick to POST. After that, all the sticks are found.

I'm aware that that mobo only supports 2666 mhz, but that won't be an issue as it will be a homelab so it doesn't need the performance.

I will test the sticks and check mobo version later this week.