A computer virus is a program that installs itself on a computer without the user's knowledge or consent and can spread by copying itself to other programs and storage drives. Viruses typically infect files with extensions like .exe, .sys, and documents. To protect against viruses, users should turn on firewalls, keep systems updated, and use antivirus software which should be kept up to date. Symptoms of a virus include computers running slower, frequent crashing, apps not working correctly, unexpected sounds, missing programs, and printing or disk issues.

1. Computer
Virus

2. What is a computer virus ?

3.  Computer virus is a program that is loaded onto your
computer without your knowledge and runs against
your wishes.
 They perform some activities like deleting files or
disturbing your computer settings.
 If a file that contains virus is executed or copied onto
another computer, then that computer will also be
"infected" by the same virus.

4. When virus will affect our computer
?

6. Computer virus affect mostly attack.com, .exe, .sys,
.bin, .pif etc Virus can affect any files on your
computer.
Virus will generally infect executable files or
data files, such as word or excel documents

7. How to protect your computer
against viruses ?

8. -:: To Protect computer against viruses, follow these steps ::-
( 3 simple Steps )
Turn on the firewall.
Keep your computer up-to-date.
Install Microsoft Security Essentials and keep it
up to date.

9. How Do I Prevent A Virus ?

10. Load only software from original disks or CD's.
Pirated or copied software is always a risk for a
virus.
Execute only programs of which you are familiar as
to their origin. Programs sent by email should
always be suspicious.
Computer uploads and "system configuration"
changes should always be performed by the person
who is responsible for the computer.
Password protection should be employed.
Purchase or download a anti-virus program that runs
as you boot or work your computer. Up-date it
frequently. There are free anti-virus programs
available.

11. Symptoms of computer virus ?

12.  The computer runs slower than usual.
 The computer crashes, and then it restarts every few
minutes.
 Applications on the computer do not work correctly.
 Strange sounds or music plays from the speakers
unexpectedly.
 A program disappears from the computer even though you did not
intentionally remove the program.
 You cannot print items correctly.
 Disks or disk drives are inaccessible.

13. THANK
YOU…….!!