simbeb

Hi,

I have a AMD athlon 64 XP3200. My M/board is an Elite NFORCE4-A939. It takes up to a maximum of 4X 1Gb DDR-SDRAM and has dual-channel memory architecture.
I am using 4 Kingston ValueRam 1gb PC3200 CL3 184-pin (KVR400X64C3A/1G). They have all been bought new and at 1 month interval, so they're all fairly new, the latest one just a few days old.

So for the last month, I've had a working PC with 3 1Gb modules. Since I've installed the 4th one, instead of seeing 4gb RAM, both the BIOS and Windows only see 3.25.Gb. Where is the rest?

I first thought the newest module was faulty, so I tried it on its own: no probs. Then I thought it was not compatible with another one in the same channel, so I swapped them a few times: no change. This also proved that my memory slots are all in perfect working order. Last thing I did was to install them one after another, with a cold boot in between to check everything was fine before I add the following one. They all installed properly, and again, the last installed module made it amount to a total of 3.25Gb of memory.
My modules are all fine, my slots are all fine. What do I do next?..