I am not sure where this post should be...please feel free to move it if necessary...I am having problems with my screen locking up while on the internet...I initially assumed this to be a software problem and I reformatted my computer and reinstalled windows XP..still locked up...called Dell and had my motherboard, video card, LCD display, keyboard replaced...I have spyware, AV programs which all show nothing on my computer...I have installed all windows updates...video card driver is updated...firmware for my wireless system is updated...locking up occurs with both IE and firefox...but only when I am on the internet does the puter lock up...have called the ISP and they could not help me...I am in desperate need of help and would be greatly appreciative of anything you all might suggest to remedy this problem...thank you in advance.