|Like I said, "the more details the better"...you didn't come thru.|
We need to know the exact make/model of the motherboard. And saying 3GB RAM is useless if you don't tell us whether it's DDR2-533, DDR2-667, DDR2-800, etc & whether it's 3 x 1GB or 2 x 1GB + 2 x 512MB. Same goes for the PSU...750W is meaningless. We need to know the make/model & amperage specs. If you don't provide the necessary info, you'll never get the answers you need.