HP EliteBook 840 G3 - Manual (Page 71)

5. Use a pointing device or the arrow keys to select an internal hard drive, and then press enter .
6. Use a pointing device or the arrow keys to select Disable protection.
7. To save your changes and exit Computer Setup, select the Exit icon in the lower-right corner of the
screen, and then follow the on-screen instructions.
– or –
Use the arrow keys to select Main > Save Changes and Exit, and then press
enter .
Using antivirus software
When you use the computer to access e-mail, a network, or the Internet, you potentially expose it to
computer viruses. Computer viruses can disable the operating system, programs, or utilities, or cause them to
function abnormally.
Antivirus software can detect most viruses, destroy them, and, in most cases, repair any damage they have
caused. To provide ongoing protection against newly discovered viruses, antivirus software must be kept up
to date.
For more information about computer viruses, type viruses in the Search box in Help and Support.
Using firewall software
Firewalls are designed to prevent unauthorized access to a system or network. A firewall can be a software
program you install on your computer and/or network, or it can be a solution made up of both hardware and
software.
There are two types of firewalls to consider:
● Host-based firewalls—Software that protects only the computer it is installed on.
● Network-based firewalls—Installed between your DSL or cable modem and your home or office network
to protect all the computers on the network.
When a firewall is installed on a system, all data sent to and from the system is monitored and compared with
a set of user-defined security criteria. Any data that does not meet those criteria is blocked.
Your computer or networking equipment may already have a firewall installed. If not, firewall software
solutions are available.
NOTE: Under some circumstances a firewall can block access to Internet games, interfere with printer or file
sharing on a network, or block authorized e-mail attachments. To temporarily resolve the problem, disable
the firewall, perform the task that you want to perform, and then reenable the firewall. To permanently
resolve the problem, reconfigure the firewall.
Installing critical security updates
CAUTION: Microsoft® sends out alerts regarding critical updates. To protect the computer from security
breaches and computer viruses, install all critical updates from Microsoft as soon as you receive an alert.
Updates to the operating system and other software may have become available after the computer left the
factory. To be sure that all available updates are installed on the computer, observe these guidelines:
Using antivirus software 61