I have a stick of 512mb PC3200 Geil which was pretty good memory. Everything was working fine, and i havent really o/ced on my new comp yet so i couldnt have messed it up. Now my comp doesnt turn on. My friend let me borrow some 256mb of Pc3200 Geil(same stuff just 256), and it worked fine. I dont see what i could have done to it? I was wondering if anyone could help me on that. My board is a MSI KT4 Ultra which does support 400 mhz DDR ram. And anyways it worked fine, then just died soo its messed.