No, the computer won't boot up at all. I can get to the screen with bootup options such as safe mode, last working config. etc., but after hitting one of those, the system shows the windows xp splash, and then darkness.
I put a Norton disk in that I own, and it is 2002, so probably does not have the needed virus defs. This was able to do a scan as the computer booted up, and found no viruses. Again, though I think there is no way that it would find a recent virus.