RAM faliure

[Tommy Vercetti]

Today I build my first ever PC, and the most balling PC in person.

Actually not my PC, it is my first time to do a part time job to help other people building on their system.

Ok bullshitting stops here, here is the symptom:

1. Hardware spec:

• Intel Core i7 6950X Genuine retail boxed version
• Cosair Dominator Platinum, 4*16GB, DDR4 3200MHz, 16-18-18-36, Voltage 1.35V, Version 4.31
• Asus ROG 10 Year Anniversary based on X99 platform(sorry I'm not sure which one exactly......)
• Nvidia Titan Xp
• Samsung SSD 960 Pro 2TB NVME + Seagate 10TB
• Cosair 1000i PSU
• .....may be that's all?

2. Symptom:

• initially after installed Windows, it reported 64GB of memory installed and available to Windows which is expected condition
• After several hours he find the RAM at sixth DIMM slot(count from the back panel side to the other side) of the memory's LED is not working, and only 48 GB of memory is detected.
• He did a lot of experiments and the result is all DIMM slot sockets are good, but that particular memory have no light on it will work only while it was installed at the third DIMM slot and no other memory at all.
• this may seems a little confusing so a diagram and several picture will explain almost everything:

He decided to return the memory and buy another one......

So what's the problem?, why it will only work on third DIMM slot only?

Is the UEFI version matters?

[Tommy Vercetti]

could someone even helping me.......

[Changis]

 make sure you have the latest bios flashed, and that you are using ram specified as compatible in your motherboard manual..

get a good flashlight or similar and visually inspect the ram slot, blow some compressed air into it to remove any potential debris hat could have gotten lodged in the slot.. it could also be a faulty board..