ECS 755-A2 Not Registering DDR correctly

[mplutodh1]

I am dumbfounded. Bought my brother a ECS 755-A2 w/Sempron 2600+ and 1G(2x512) Kingston ValueRam. Install the ram, go to boot it up and the memory registers as 512MB. Removed one stick thinking maybe one was bad, and remaining stick shows up as 256MB.

I am confused, both sticks are dual sided with 16 32MB chips total, which as far as I know is a 512 stick. Part #'s and everything on the ram match up as what I ordered.

Is there something I am overlooking or might cause this? Jumper somewhere, setting in the Bios?

Before I caught this I attempted to install Windows and got a ntokernal.exe error, figured maybe the ram was causing it and turned the timing down so it matched the FSB (133 instead of 200 by default) this didn't help.

Any suggestions would be greatly appreciated.

 

[LiLithTecH]

Are they Dual Ranked (ECS refers to them as Double Rank) memory modules?

If so, do you have them in DIMM Slot 1 & 3?

 

[mplutodh1]

There are only 2 slots.. which has confused me with the manual. Not sure what you mean by dual rank?

 

[Skyhack]

What BIOS version do you have? I'm running the same board and I flashed mine to 1.1B...

I just replaced 2 256MB PC2700 sticks with one stick of Mushkin IGB PC3200...When I first put the ram in, all it would do is beep about once every 5 seconds...Then I cleared the CMOS and it worked fine...Dual rank means there are memory chips on both sides of the Dimm...The Mushkin is indeed double rank, and in the motherboard docs it shows you can have one slot filled with a double rank Dimm but not both...

 

[LiLithTecH]

There are 2 versions of the motherboard (v1.0 & v1.0a).

According to ECS's website, the Sempron 2600+ (Rev D0 - E6)
requires v1.1b Bios on both motherboard versions.