My motherboard won't detect any RAM in the last two slots, and eventually, last three of them.

Rapalino

Reputable
Aug 17, 2014
11
0
4,510
Hi guys, I have an issue right now with my motherboard.

My computer worked great since the day I built it. But then I tested some brand new RAMs and a brand new CPU from a friend. In that process I remember pressing the memOK button. Anyway, since that day, my motherboard just detect the RAMs placed in the two first slots, no matter what. I still can use my 8GB of RAM but can't take avantage of Dual Channel technology.

I eventually gave up and kept my PC running like that. A few days ago I performed a cleaning on it, physical cleaning, and now just detect RAM on the very first slot. I'm looking for some help, maybe you guys can give me a hand?

HARDWARE SPEC:

Motherboard: ASUS Z87A.
CPU: Core i5 4690.
RAM: Kingston Value 2X4GB.

Feel free to ask any extra info.

NOTE: Just to clairify, if I put both memories, it won't run at all. It just runs with one of them, whichever, in the very first slot.
 

Rapalino

Reputable
Aug 17, 2014
11
0
4,510


Just normal cleaning. With a blower, to remove any dust. And no, there are not bent wires at all.

Another thing: I actually made the PC recgonize de module, but I can't make it usable. For ex. If I use a black slot, the first one boots, the last one doesn't. In BIOS it shows me 8 GB of RAM, but just 4 GB usable in Windows.