System comprises: Gigabyte K8VT800 Sempron 3100 1 gig RAM 250 Seagate etc ok, briefly, built system, went to fire it up, it powers up throughout, but nothing. It does not boot, and there are no beep sounds. I put in a pc analyzer card, which, with nothing external plugged in shows 00 (award bios), but when I plug in anything such as mouse, keyboard, screen etc shows 04, which translates as "Test Memory Refresh Toggle". I have tried removing the graphics card, resetting the bios, removing batt etc. Can anyone please shed any light on this please? Many thanks chaps!