Memory/Dual channel issues

[mechaniman99]

My rig:
Coolermaster Cavalier CAV-T03 (1 80mm intake and 1 120mm exhaust fan)
2x512MB XMS Corsair PC 3200
Antec Truepower 2.0 550W
1-XFX GeForce 7600 GT PCIX 16 SLI
AMD 3800 processor
ASUS A8N32 motherboard with 2 PCIX 16 slots

I originally had a problem with no video when I booted it up. But when I removed 1 of the RAM sticks, I booted up just fine and got my video to work (originally, I had the 2 sticks in A1 and A2, side-by-side.) When I inserted the 2nd stick in B1 instead of A2, I booted up just fine and got my 1 gig total. My MB manual says I am supposed to run the memory side by side in dual channel as long as they are of the same size and type. Am I doing something wrong to cause this? Any insight is appreciated. Thanks.

 

[dougie_boy]

check the bios version, get cpuz and see if the memory is working in dual channel mode.

 

[The_Prophecy]

To operate in dual channel mode, the ram must be in slots 1 and 3 (the blue slots).