What is the error message? Maybe it has conflict with your driver?
Sorry, I can not remember the error message in detail. Roughly the message was about DEP terminated the application I tried to initialize..... For instance, when I double clicked the IE icon on the desktop, the first thing I got was "all icons on the desktop disappeared", right after that was "quick screen flash", then the error message came up......If I try to cancel or stop the DEP error message box, there might be endless message box saying memory writing failed...
I got pissed off....
I just called Dell, they asked me to convert to XP HOME+SP2 which were officially provided by Dell, and then they can go ahead with technical support...