I'm new here and would like some help if you don't mind. I've got XP and just the other day my num lock , f lock, scroll lock and caps lock won't allow me to turn them off. how do i turn them off. When i click on my full screen button at the top nothing happens as well. I haven't downloaded any programs for quite some time so i don't think that's the problem. I was on some webpages when this problem started. Did i receive some virus? I have AVG antivirus, wouldn't that have detected a virus? Or is it something else? Thanks for helping me, i appreciate it.