How fucked am I

so i'am in the process of switching between avira and avg anti-viral software and my computer goes nuts and all these odd security warnings popup. so i manualy unplug the net and reboot. i can then get back to xp hoever mycomputer, my documents, etc are missing and i can only access a few of my programs. how fucked am I /tech/?

If you're one of those people who doesn't take backups (and since you're a Winfag, I'd guess you are), the first thing to do is not to use Explorer to look at your filesystem, but something else, to get a better idea of what happened.