If you can answer "yes" to any of the following questions, your
computer might have a virus.
Is your computer running very
slowly? A common symptom of a virus is much slower than normal computer
performance. However, there can be other reasons for slow performance, including
a hard
disk that needs defragmenting, a computer that needs more memory (RAM), or
the existence of spyware
or adware. For more information about spyware,
Are you getting unexpected
messages, or are programs starting automatically? Some viruses can cause
damage to Windows or some of your programs.
The results of this damage might include messages appearing unexpectedly,
programs starting or closing automatically, or Windows shutting down suddenly.
Is your modem or hard disk working
overtime? 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.
To check for viruses, scan your computer with an antivirus
program. New viruses appear every day, so keeping your antivirus program updated
is important. For more information about computer security, go to the Security at Home page on
the Microsoft website
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