ASUS M4A88TD-V DIMM A1,B1 slot not working!

[wasupbaby]

Hello!

I recently built a computer with
MotherBoard: ASUS M4A88TD-V EVO/USB3
RAM: G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-4GBRL

Problem is that out of 0,1,2,3
Only 2 and 3 work!

means I'm able to boot up BIOS.

I've tried with one RAM stick (only 2 and 3 worked)
and two sticks with every combination (again only 2,3 combo worked).

This is a brand new MOBO,
dose this mean I got a defective one?

 

[Rusting In Peace]

Check your motherboard manual for the suggested memory configuration.

I've had a look at the available bios updates for this board but there is nothing specific about memory fixes it's just "Improves system stability" all over the place. You might want to consider flashing the bios to the latest version if you've not already got the latest version of the bios.

Failing that I'd RMA board.

 

[wasupbaby]

So the mobo manual suggests either A1+B1, or A2+B2 for dual channel.
After testing various combinations, any combination that has A1 or A2 fails..

I found someone who had similar issues, but
the problem was not solved even after replacing the motherboard.

Is it possible that these will not work due to wrong settings (e.g. wrong timing, not overclocking)?
The known setting is 1600mhz at 9-9-9-24, but im running it at 1333mhz at 9-9-9-28

 

[Rusting In Peace]

It's reasonable to run slower RAM speeds most of the time.

Make sure the divider isn't set to something silly though. You might be accidentally overclocking your CPU.

Do you have another system you can put this RAM in and run Memtest?

No chance you can return both the motherboard and ram?

 

[wasupbaby]

RAM seems be working. I returned the MOBO. I'll find out what the real problem is in a week!

 

[aamir_jamal_2000]

hi. am using the same motherboard and have da same problem
slot 0 and 1 doesnt work...
tried everything but this motherboard doesnt work in dual channel mode!!!