A88M-G/3.1 Dual Channel Memory Problem

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   I just completed a new build: A88M-G/3.1 A10-7700K Crucial MX200 SSD Corsair H-75 Cooler 16 gig DDR3 Ram G-Skill F3-1200CL10D-16BXL (DDR3-1600 PC3-12800 8192MBx2 CL 10 10 10 30 1.5V)
My issue is when inserting ram into a1/b1 or a2/b2 I only see 8 gig single channel mode.  and that's in the a1 or the a2 slot if I insert the ram in a1/a2 I see 16 gig.  when I look at UEFI Avanced section at DDR3 timing I see the timing for the populated dimm slots.

Can anyone offer an explanation or soluion to my problem.  I have not installed OS yet, just testing system first.

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BakerTed Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2016 Location: Florida Status: Offline Points: 5	Post Options Post Reply Quote BakerTed Report Post Thanks(0) Quote Reply Topic: A88M-G/3.1 Dual Channel Memory Problem Posted: 29 Apr 2016 at 2:05am
	I just completed a new build: A88M-G/3.1 A10-7700K Crucial MX200 SSD Corsair H-75 Cooler 16 gig DDR3 Ram G-Skill F3-1200CL10D-16BXL (DDR3-1600 PC3-12800 8192MBx2 CL 10 10 10 30 1.5V) My issue is when inserting ram into a1/b1 or a2/b2 I only see 8 gig single channel mode. and that's in the a1 or the a2 slot if I insert the ram in a1/a2 I see 16 gig. when I look at UEFI Avanced section at DDR3 timing I see the timing for the populated dimm slots. Can anyone offer an explanation or soluion to my problem. I have not installed OS yet, just testing system first.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 24608	Post Options Post Reply Quote Xaltar Report Post Thanks(1) Quote Reply Posted: 29 Apr 2016 at 5:58am
	Have you tried installing one stick of RAM in either of the B slots? If the system won't post with only one RAM module installed in a B slot then we know that the B slots are not registering correctly/at all. If that is the case then check your CPU for bent pins.


BakerTed Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2016 Location: Florida Status: Offline Points: 5	Post Options Post Reply Quote BakerTed Report Post Thanks(0) Quote Reply Posted: 29 Apr 2016 at 6:36am
	Thanks for your reply. I believe I did that yesterday but istalled 2. So, I'll try is with just one in B1 then B1 in B2 an let you know. Again thanks.

BakerTed Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2016 Location: Florida Status: Offline Points: 5	Post Options Post Reply Quote BakerTed Report Post Thanks(0) Quote Reply Posted: 30 Apr 2016 at 4:51am
	I thought I' let you know how it's going. I see all 16 gig in dual channel mode now. I ended up pulling the Corsair H-75 Liquid Cooler and the A10-7700K inspected for bent pins; found all ok. Reseated he CPU reinstalled the cooler, cranked it up and all is ok. Again thanks for your help.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 24608	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 30 Apr 2016 at 12:14pm
	Good to hear you got it working