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Operating Systems, Computing

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Information

WINDOWS TOOLS

System Information

System Informationshows details about your computer's hardware configuration, computer components, and software, including drivers.

Open System Information by clicking Start button » All Programs » Accessories» System Tools » System Information

Security Center

Windows Security Center can

help enhance your computer's

security by checking the status of

several security essentials on your

computer.

If Windows detects a problem with any

of these security essential, it displays a

notification and you get information

about how to fix the problem.

If Windows detects a problem with any of these security essentials (for example, if your antivirus program is out of date), Security Center displays a notification and places a Security Center icon

Open System Information by clicking Start button » All Programs » Accessories» System Tools »

System Restore

System Restore uses restore points to

return your system files and settings to

an earlier point in time, without

affecting personal files.

Open System Restore by clicking the Start button » clicking All Programs » Accessories » System Tools » System Restore

Sometimes, the installation of a program can

cause an unexpected change to your

computer so, you can try restoring your

computer's system to fix the problem

Character Map

Start » Programs » Accessories » System Tools »Character Map.

Charmap is used to input or

check out characters of

different encodings and

fonts installed on your

system.

You use the Character Map to insert

meaningful characters to the folder

(or file) names.

Disk Defragmenter

Disk Defragmenter

consolidates fragmented

files and folders on your

computer's hard disk.

As a result, your system

can gain access to your

files and folders and save

new ones more efficiently

Start » Programs » Accessories » System Tools » Disk Defragmenter

Defragmenting can significantly

increase the speed of file loading.

COMPUTER NETWORK: Components of network

hardware

All networks are made up of basic hardware building blocks to interconnect network nodes, such as Network Interface Cards

(NICs), Repeaters, Hubs, cables and Routers.

Network Card

A network card, network adapter

or NIC,

is a piece of computer hardware

designed to allow computers to

communicate over a computer

network.

It allows users to connect to

each other by using cables or

wireless.

Cables & connectors

Twisted pair using

a RJ45 connector

Coaxial cable

Optical cables

Repeaters and Hubs

A repeater is an electronic device

that receives a network signal,

cleans it of unnecessary noise, and

regenerates it. The signal

is retransmitted at a higher power

level, so that the signal can cover

longer distances without

degradation

A repeater with multiple ports is

known as a hub. .

Image of a hub

Router

A hardware device

designed to take

incoming packets,

analyzing the packets and

then directing them to the

appropriate locations

SCHEME OF THE EQUIPMENT AND DEVICES

CONNECTIONS

Network software

settings and protocols

Name and workgroup

Clicking on “my

PC” with the

second button of

the mouse,

access to

properties.

If we click in computer

name tab, we can find the

details about the

computer´s description,

name and workgroup

Clicking in workgroup and change, we can find

this box

SO, in the box highlighted you can

put a new name

IP address and other information

Step by step:

1. Click on control panel

2. Select network connections

3. Select “Local area connection” and click on

properties

4. A new Windows appear. Select Internet

Protocol (TCP/IP). Click on Properties.

5. You can now key in the IP address,

Subnet mask, Default gateway and DNS

servers.

The boxes would appear in blank, so take the

Numbers following the same steps in the Spanish

version of windows. Copy all the numbers except

the last box of IP adrees

MSDOS COMMANDS Ping

It is a utility used to verify if a network data packet is capable of being distributed

to an address without errors.

Allows you to ping another computer where the x's are located are where

you would place the IP address of the computer you are attempting to ping

If this is not able to complete, this should relay back an

unsuccessful message.

If we write “ping” and a wrong IP adress, this box would appear with

a "timed out" error instead of a reply. It means there is a breakdown

somewhere between your computer and the domain

Ipconfig

This command can be utilized to verify a network connection as well as to verify

your network settings.

You can get all local network information for your computer writing

“ipconfig” in the Command Prompt

When I start my computer up I always find a blue star and a message from Microsoft "Windows Genuine Advantage" to buy the Windows Original as long as mine, like many users’, is not, or at least I do not remember having bought. Let me know how I can delete the notice and how I can prevent myself from getting it again.

SECURITY PROBLEMS

Problem 1:

Answer:

Windows Genuine Advantage notifications occur when your computer hasn't passed

the validation test.

The validation test can be failed because you installed a pirated non-genuine copy of

XP, or because you have changed your XP product key to a software-generated key,

or sometimes it just happens for no reason at all.

If you are being constantly nagged by Microsoft to validate your Windows license,

you have the option of purchasing a genuine copy of Windows XP or resolving the

problem later. However, there is actually a way of disabling the message by editing

your registry.

So, if you want to remove those annoying notifications, you can follow one of these

5 methods that you can find in this website:

http://www.wikihow.com/Remove-Windows-Genuine-Advantage-Notifications

PROBLEM 2:

The antivirus detects an infection (Internet

worm) win32/boberog.AQ in working

memory. It seems my antivirus detects it

but cannot solve the problem.

Answer

Win32.Boberog.AQ is one of the Windows illegal malicious programs which may

occupy system resources and slow down computers.

You can find more information about this kind of worn in this website:

http://www.virusradar.com/Win32_Boberog.AQ/description

This worm can open your email address book and despatch one clone each to each

of the addresses listed… Here you have more information about how worns spread:

http://www.emsisoft.com/en/kb/articles/tec050629/

Well, now to remove it, you can do it manually or instantly following the steps given

in this website:

http://www.spydig.com/spyware-info/Win32-Boberog-AQ.html

But if you feel incapable to do that… I ll recommend you to visit an expert in

computers so this problema won t appear in the future any more.