I went to the motherboard website to make sure to buy the right memory for my computer. It said it will take 2 1GB PC3200 400mhz so that's what I bought. Now the computer will not boot up Windows xp. On the screen it says windows is loading and then goes black. I took out the new memory and put back the old which was pc2100 1GB and it works again. All I wanted to do was update but it doesn't seem to work. Can anyone help?