I dunno, it does not sound like a virus.
When was the last time you ran scan disk and defrag?
Because of the problems today, I defragged today. I have my computer set up to defrag every 3 days by default.
" I dunno", When was the last time your printer decided to print on its own? When was the last time that all the printers listed in your Printers Folder decided to print on their own?