So I bought a WINTEC AMPO 1GB 184-Pin DDR SDRAM DDR 400 (PC 3200) Desktop Memory http://www.newegg.com/Product/Product.asp?Item=N82E16820161679 for my desktop, which is an E machines with a 512 stick of ram with the same specs. Both the one I bought and the one that works (it came with it) are pc3200 ddr400MHz CL3 sticks of ram. I have an AMD processorThe one I ordered is even specificly made for AMD systems. I installed the 1G stick and it wouldn't work. I made sure it fit correctly, was securly fastened, but it just goes to the windows xp start up screen and blanks out and repeats. If anyone could help I'd greatly appreciate it. Thanks.