had to read the other post again, to catch back up, if your ram is different then this is more then likely the problem, could be many reasons. first i would hook everytthing up, without the monitor pluged to the video card, and the power cord to the psu, use the cmos jumper and reset the cmos settings, if the store tested your board with ddr ram, it may not detect the sdram unless you force it to. there could also be a jumper for the ram on the mainboard. if your ram is double sided, your board may not detect it, if your ram is ecc. your board may not support it, if you could provide me with the letter for the sv266(a,ad, or m) i will look up your board and see what settings, ram types, and anything else that might be a issue