1gb DDR memory reads as 512m in Biostar K8NHA-Grand

[dwexpress]

Hello - I just built a Biostar K8NHA Grand MOBO w AMD 64 3000+ and put 1 stick of Geil 1gb DDR400 memory in one of the two slots. System runs fine but BIOS and OS show only 512m of memory. I have tried two different sticks with the same results, Any ideas????

 

[sturm]

Is the stick single or double sided? Your motherboard only supports 2gb of memory. If its single sided memory then try a double sided and see what happens.