Just after i installed the newest Windows XP service pack (service pack 2), my computer began to crash on startup. I got the message "IRQL_NOT_LESS_OR_EQUAL", and Physical Memory has been dumped. I would have to reset and it worked normaly. If you have a solution that fixes the problem or at least uninstalls the service pack without deleting and reinstalling WINxp, please post. thanks.
Microsoft provides 4 different ways to remove the SP2 pack at this URL :- http://support.microsoft.com/default.aspx?scid=kb;en-us;875350&Product=winxp