Added to post. KixStart is working on over 1500 desktops and most laptops. So it is not a scripting problem. This only began recently. Also yes I have replaced all DLL's that go with the version of KiXstart running EA 3.61 and 3.62. After the blue screen users hit any key and the script continues to run properly. There is nothing in startup or any of the other startups. Yes we do run Norton Anti-Virus but I do as well on a laptop and do not have this error occuring. The Laptops are IBM thinkpad. 600 series I believe. I dont know if I can narrow down this problem any further. If I remove the users login script the error does not occur and the laptop runs fine with no blue screen.