ok im pretty sure that this doesnt belong here but i couldnt find any other place to put it. Well here it is...

I have 2 ddr 512 sticks but for some reason only one works. I have them both in the computer and it only registers as one. My mainboard is a 8s658fx-rz-(-c) Sis 648fx chipset by Gigabyte. I would really like to know whats wrong with it because i really need more ram in this computer. Thx for ur time at looking at this and i hope u can help