Hello. My friend's computer was infected by viruses. I decided to setup a new copy of Win XP SP3. But I saw an error at the first of it: "File setup dd.sys could not be loaded. the error code is 4." I have setup it anyway. every thing worked properly. But today when I wanted to turn on the computer, after main board logo this error has occurred: "Windows could not start because of an error in the software. Please report this problem as: Load needed DLLs for Kernel. Please contact your support person to report this problem." Now I can't load my friend's Win. Please guide me.