My computer will not start, I tried everything getting it in "safe mode" it go to the bleu screen and it stock there and most of all it doesn't even read the CD boot, I have an AMD 4200 dual core with XP Home edition, the last 2 weeks it quit on me all the time, the last time was when I downloaded the Spyware Doctor while doing the scanning it shuts out and come back by itself, also in my C;Drice I found a program stand like this NTuser DATFile 4,008KB when I try to delete it a window comes up and say " it is being use by another person" and doesn't allowed me to delete...the last 2 weeks also a page from yahoo had tried to take my own page...what is my option? Am I been hijacked and what can I do? In advance THANKS