Okay, before I return the 2.8 P4, I pulled the 2.2 P4 400 bus from my Dell 2400 desktop and put it in the laptop. I put the 2.8 P4 533 in the desktop. The desktop seem stable and running good. (cross my fingers). I have the 2.2 in the laptop and I'm going to see how that goes. I had one...