Hello, I've got an HP dv6000 laptop with Windows XP. I got a Trojan virus in the system32/userinit.exe, and my antivirus wnet and automatically deleted the file before I could do anything and then restarted. I can't log on to my laptop at all, not even in safe mode. I lost my Windows disk that I got when I bought the laptop, so I went to the microsoft site, downloaded the SP3 iso file and mounted it onto a bootable DVD. But I can't get my computer to boot from the DVD, even though I put the disk drive first in boot order. The screen comes up, and it says press [esc] to change boot order comes up, then it shifts to a black screen with a flashing command line (that I can't type anything in), then it says briefly 'Caldera DR-DOS' and goes back to the first screen. It goes in a cycle, and I've tried changing to boot order again, pressing keys but I just can't get it to boot from the disk. Any suggestions? I've tried multiple CDs and DVDs, but nothing works.