Hi. I am currently trying to upgrade the ram in my box. I'm running an ECS 661fx-m motherboard foir which I was told I needed to use low density ram. I've installed 2 x 1gb ddr sd ram (128mx72) modules and all I get is a long low beeping and a black screen. When I tried it in my neighbours which is an ECS661fx-m7 motherboard 9same specs in the manual) it works. Can anyone help re this problem. Ive tried ECS and no reply from them. Is there a setting I'm missing? Any help would be appreciated.