How can I tell if my computer has a virus?
<li><span></span> A common symptom of a virus is much slower than normal computer
performance. However, there can be other reasons for slow performance, <a href="/mshelp://windows/?id=5a2fccaa-2424-4646-b571-97b557e2c87b#gtmt_hard_disk_def"></a> that needs defragmenting, a computer that needs more memory (RAM)</li>
<li><span>Are you getting unexpected
messages, or are programs starting automatically?</span> Some viruses can cause
damage to <span>Windows</span> or some of your programs.
The results of this damage might include messages appearing unexpectedly,
programs starting or closing automatically, or <span>Windows</span> shutting down suddenly.</li>
<li><span>Is your modem or hard disk working
overtime?</span> An e‑mail virus works by sending many copies of itself by
e‑mail. One indicator of this is that the activity light on your broadband or
external modem is constantly lit; another is the sound of your computer's hard
disk continually working. These are not always symptoms of a computer virus, but
when combined with other problems, can indicate a virus infection.</li></ol>
on Dec 11, 2010 | PC Desktops