As this question is placed in XP i should also mention all XP support end April 2014.
By downloading an anti-virus protecting system of course! A good one that gives a 30day free trial is AVG internet Security 2013. They also have a slightly less effective free version.
One may protect their computer from malicious software by installing an antivirus program such as Kapersky or Norton. These programs need to be updated regularly to detect the latest threats.
passwords protect ur comps
update anti-virus sofftware
it protects the inside of the computer and outside
A case protects a computer when it is dropped.
It protects your computer from any viruses.
A transistor
protects your computer from malicious software that could cause distruction of computer
protects your computer
green plants
it protects your computer from virus's
It guards, and protects your computer screen from scratches.
a computer virus program like" Fire fox", will protect a computer against a virus.
it protects your computer and you will not get any vireses and you will not worry about b uying another computer again
antivirus is som ething which protects your computer from geeting virus in it