Hi All, I am in the process of upgrading my CPU (Mobo Gigabyte GA-7VTX) and I have been told that I have to "clear CMOS" to get the new CPU to work. Can someone please explain to me, a novice, what this means and how and when I do it. I am upgrading from an AMD Athlon XP 1500 to a 2400. I am tempted to go to the local Computer Workshop but really I would prefer the satisfaction of doing it myself. Grateful for any assistance/info. Cheers.