Computer slowing down? You better check it out
Another important aspect of virus protection in Microsoft Windows is to be constantly alert to any changes in the performance of your computer system. For example, if your computer seems to be developing sudden, recurring system slowdowns, this could be a symptom of a computer virus at work. Another symptom could be the disappearance of critical system files from your hard drive — files which you would never normally delete or modify in any way. Sometimes, when a computer is infected with a virus, these programs will maliciously attempt to delete files, send out spam e-mails or create other kinds of havoc. If your computer has not done these things in the past, you need to be very concerned if it begins to happen in the future.