Hello, Thought I would ask the experts..... Every now and then my computer monitor will flicker. It goes completely black and then in a few seconds it will return to normal. I have been told it could be a virus or a computer hacker getting into the system. I do not know if that is true, or just an urban myth. I have however ran system scans for viruses and they have returned clean. The problem is finding a reliable competent virus scan. I currently use Microsofts LiveOne care because Microsoft offers it, and I figured they would know more about Windows XP etc. I use crapcleaner to remove unwanted files, and use to use CA (computer associates i think) virus scanner before the microsoft virus scanner. I sit behind the secured wireless router from ATT so I think I am somewhat secure. Let me know if there is any truth to the screen flickering and what I should do. Thank you.