I have a locked Barton 2500 CPU installed with some Crucial PC2100 RAM on an Asus A7N8X-X mobo. I increased the FSB yesterday from 166mhz to 170mhz. I thought all was well but when I played UT2004 for a couple of hours the system locked up. So, I restarted and recieved a blue screen when trying to boot windows. When I lowered the FSB back down to 166 windows booted properly and everything was fine again. Can you help me? P.S Could my memory be something to do with it? I am going to upgrade to some GeIL 1gb PC3200 RAM soon.