I've tried to remove 2GB but it still gives me problems, the LCD Poster says Check DRAM (or something like that, I don't remember exactly) and it won't boot in any way. The ONLY setup which made me boot into Windows is the one I've posted before, but it wasn't stable. I've also flashed the bios back to 0404, still no results. This is the neverending story , the ONLY way I can be stable is to have the RAM at 1600 with 400 FSB, I'm beginning to think that it's the RAM'S fault...