PC Troubleshooting Guide

Here you will learn about the computer troubleshooting tips, how to fix hardware errors, networking how to, and learn how to fix the software errors. Troubleshooting the computer problems is a very vital role of the system administrators, hardware technicians and system specialists. Every hardware component in the computer system has its own configurations methods and troubleshooting techniques. If you use a computer at your home or in office, this guide will be wonderful help for you in diagnostic and troubleshooting your basic computer problems

There are some basic techniques and you should be aware of them. If you encounter a slow boot up problem, there are some basic tips and by implementing these tricks you can increase the speed of your computer and laptop problems.

How to Speed up the Computer

1. Windows Defragmenter utility: You can use this utility by using this path Start > Programs > Accessories > System tools > Disk defragmenter. This is built-in utility in Windows operating systems and this will automatically analyze the empty disk space on the hard disk and defragment and all scattered files.
2. Shutdown Unnecessary programs: By using this path Start > Run > Msconfig > Startup, you can close all unwanted programs at the Windows startup and this will automatically increase the windows loading time and speed of the computer will also be increased.
3. Increase RAM: By increasing the RAM in your system you can get exceptional fast speed of your computer.
4. Disk Cleanup: By using the disk clean up utility Start > Programs > Accessories > System tools > Disk clean up utility, you can delete unwanted programs and files from your computer and this will be helpful in increasing the speed.
5. Empty Recycle Bin: When you delete a file or a folder form your computer it first goes to the recycle bin and it covers the disk area of your C drive. It is imperative, to delete all the files and folders from the recycle bin and you will get the space of C drive for reusability.
6. Delete Temporary Files: Delete the temporary files and cookies from your computer to get the better speed. You can do this like Internet explorer > Tools > Internet options > Generals > Settings > View files > here you can delete all the temporary internet files.
How to Troubleshoot the Computer?
Here you will learn the basic troubleshooting methods of your computer.
1. Trial and error: When you find a faulty component in your computer, first of you check it with the other computers so that you can make sure whether the fault is in the component or not.
2. Check cables: In case of any device failure, check all the cables of your computer such as data cables, power cable, internal circuitry cables etc and make sure that all the cables are plugged in and working fine.
3. Hardware settings: Check the hardware settings in the CMOS and in the device manager of the system and make all the device drivers and up to date and all the cards are plugged in properly.
4. Notice changes: When you notice a software or hardware error in your computer, determine what was changed before the problem occurred.
5. Event viewer: Use the event viewer utility by going to Start > Control panel > Administrative tools > Event viewer. In the event viewer you will find the error or warning messages associated with any faulty hardware or software.
6. Make notes: Troubleshooting is big learning option and we can learn a lot when we face any kind of troubleshooting in our computer. Make notes including the error messages and their solutions, so that you have a record that how a certain problem occurred and how did you solve it.
Data Recovery Tips
Accidental loss or deletion of the critical data of your organization can cause big problems for you and for your company. If you are a system administrator or a hardware technician and responsible for your company’s data, it is your duty to equip yourself with the great system restore and data recovery utilities and if you are empty handed and you encounter such problems, there can be big financial loss for your company in case of completely removal of data and wastage of precious time. Following are the few tips for recovering the lost data.
1. Use some good data recovery utilities such as File recovery, Recovery My Files, R-tt and a free utility Handy Recovery.
2. If you are responsible for the data and system administrations, use backup tapes drives and regularly take backups of your server’s data.
3. Use UPS and diesel generators if power failure occurs regularly in your area because sudden shutdown can crash your server and other systems.
4. Make a clean humid and dust free environment for your server room.
Diagnostics with Beep Codes
Following are the beep messages associated with the IBP bios.
1 short beep specifies a normal post
2 short beeps tells about POST errors that can be find on screen.
Continuous beeps indicates power supply and other cards errors.
One long and short beep indicates system board problems
3 long beeps defines keyboard errors
No system beep tells about power supply errors.

How To Make Your Own Networking Cable

COLOR-CODE STANDARDS

Again, please bear with me...  Let's start with simple pin-out diagrams of the two types of UTP Ethernet cables and watch how committees can make a can of worms out of them.  Here are the diagrams:

Note that the TX (transmitter) pins are connected to corresponding RX (receiver) pins, plus to plus and minus to minus.  And that  you must use a crossover cable to connect units with identical interfaces.  If you use a straight-through cable, one of the two units must, in effect, perform the cross-over function.

Two wire color-code standards apply: EIA/TIA 568A and EIA/TIA 568B. The codes are commonly depicted with RJ-45 jacks as follows (the view is from the front of the jacks):
If we apply the 568A color code and show all eight wires, our pin-out looks like this:

Note that pins 4, 5, 7, and 8 and the blue and brown pairs are not used in either standard.  Quite contrary to what you may read elsewhere, these pins and wires are not used or required to implement 100BASE-TX duplexing--they are just plain wasted.
However, the actual cables are not physically that simple.  In the diagrams, the orange pair of wires are not adjacent.  The blue pair is upside-down.  The right ends match RJ-45 jacks and the left ends do not.  If, for example, we invert the left side of the 568A "straight"-thru cable to match a 568A jack--put one 180° twist in the entire cable from end-to-end--and twist together and rearrange the appropriate pairs, we get the following can-of-worms:

This further emphasizes, I hope,  the importance of the word "twist" in making network cables which will work.  You cannot use an flat-untwisted telephone cable for a network cable.  Furthermore, you must use a pair of twisted wires to connect a set of transmitter pins to their corresponding receiver pins.  You cannot use a wire from one pair and another wire from a different pair.

Keeping the above principles in mind, we can simplify the diagram for a 568A straight-thru cable by untwisting  the wires, except the 180° twist in the entire cable, and bending the ends upward.  Likewise, if we exchange the green and orange pairs in the 568A diagram we will get a simplified diagram for a 568B straight-thru cable.  If we cross the green and orange pairs in the 568A diagram we will arrive at a simplified diagram for a crossover cable.  All three are shown below.

Networking Tips

Network Configuration

How to Configure a Network

In this section you will learn how to configure a network, peer to peer, client server, workstation, server, basic data communication.

Peer to Peer network model

Before configuring a computer network, you have to decide that, which networking model you require. There are two main types of network models. Peer to peer and client-server network model. In the peer to peer network model you simply use the same Workgroup for all the computers and a unique name for each computer.

Additionally, you will have to give a unique IP address of the same class A, B, or C for all the computers in your network and its related subnet mask e.g if you decide to use class A IP address for your three computers in your Peer to Peer network then your IP address/Subnet mask settings can be as follows.

Computer Name IP Address Subnet Mask Workgroup

PC1 100.100.100.1 255.0.0.0 Officenetwork
PC2 100.100.100.2 255.0.0.0 Officenetwork
PC3 100.100.100.3 255.0.0.0 Officenetwor

Please note that the above example is for only illustration purpose so you can choose any IP address, computer name and workgroup name of your interest.

For doing this right click on My Computer and then click Properties then go to the Network Identification section and set these.

In a peer to peer network all computers acts as a client because there is not centralized server. Peer to peer network is used where not security is required in the network.


If a computer fails to work then all other computers work normally in peer to peer network.

Client/Server Network Model

In the client/server network model a computer plays a centralized role and is known as a server all other computers in the network are known as clients. All client computers access the server simultaneously for files, database, docs, spreadsheets, web pages and resources like hard diver, printer, fax modem, CD/DVD ROM and others. In other words, all the client computes depends on the server and if server fails to respond or crash then networking/communication between the server and the client computes stops.

If you want to configure a client-server network model then first prepare the server. Install Windows 2000 or Windows 2003 Server from the CD on the server computer and make a domain. You can create a domain by this command on the Run “DCPROMO”. You can give this command once you install the server successfully. After you give the DCPROMO command you will be asked for a unique domain name. All the client computers will use the same unique domain name for becoming the part of this domain. This command will install the active directory on the server, DNS and other required things. A step by step wizard will run and will guide you for the rest of the steps. Make sure that a network cable is plugged in the LAN card of the server when you run the DCPROMO.exe command.

When the Active directory is properly installed on the server, restart the server. You can create network users on the server computer and also name/label the network resources like computers/printers etc.

Once you install the server successfully now come to the client computers. Install Windows 2000 professional on your all client computers. Once you install the Windows 2000 professional on the clients the next step is to make this computer (client computer) a part of the network.

Configuration Steps

1. Choose a unique name for each client computer
2. Choose unique IP address for each computer and relevant.
3. Use the same domain name for all client PCs.

Network/System administrators are required to do these administrative tasks on the server and client computers. Any shared resources on the network either on the server or the clients can be access through the My Network Places in the Windows 2000 platform. There is another way to connect to the shared resources by giving this command in the run \\ComputerName\SharedDriveLetter.

Network configurations steps can be implemented by right clicking the My Computer>Properties>

For giving the IP address you will have to right click on the My Network places>properties>Local Area Connection>Properties>Internet Protocols (TCP/IP)>Properties and then give the IP address and subnet mask of the same range and class for all the computers in the network.

Communication Device

Introduction to the Network Communication Devices

In this tutorial you will learn get the basic introduction to network devices such as nic adapters, routers, hubs, switches, modems, communication cables, lan/wan routers, gateway and other devices. A network is consists of a larger number of the communication devices. The simplest device that is used in the communication is the NIC adapter which is attached with the every computer in a network. If you want to build a LAN, you will need to have computers, hubs, switches, network adapters, UTP/STP cables, routers, internal/external modems, connectors, cable testers and clipping tool.  On the other hand if you need to build WAN, you will need to have routers, switches, dedicated or leased telephone lines such as ISDN lines, frame relay connection and other types of wan communication connections.
There are different communication mediums such as Ethernet cables, copper wire, coaxial cable, fiber optic cables, leased telephone lines and ever air is also a communication medium for the satellite communication. The most common networking medium is the LAN is the Ethernet cable (UTP/STP), which is used in the star topology. Hub is a central device of a network and every computer in a network is directly connected with the hub. If the hub fails to work, the communication between the computers stops till the hub again starts working. Hub broadcasts the data to its every port, and then finding the destined computer, the data sent toward it. The switch is an advance form of the hub similar in functions but the advanced switches has a switching table in them. A advanced switch stores the MAC address of every attached computer and the data is only sent to the destined computer, unlike the hubs where data is sent to all ports. A router is a key device in the internet communication and wan communication system. A router has software called routing table and the source and destination addresses are stored in the routing table.
A router connects two logically and physically different networks. Router finds the IP address of the next hop (next router) and the data is sent toward it and so on. The well known routers developing companies are Cisco systems, Nortel, DLink and others. Every ISP, banks, corporate offices and multinational companies use routers for LAN and WAN communications and communication in their private networks. A gateway can be device or software in a network.
A gateway device connects the LAN with the internet. A gateway is directly exposed to the internet so it should be securely configured and in and out traffic should be monitored. If you are using DSL connection, you must need a DSL modem in your network. The telephone line is connected with the DSL modem and UTP/STP cable attaches your computer with the DSL modem. Modems are the devices that are used to modulate and demodulate the data. They convert analogue signals to digital and digital signals to analogue so that signals can travel on the telephone lines.
There are certain types of the cables that are used to connect two or more computers in a network. Fiber optic cable acts as a backbone between the ISPs and corporate offices. Data travels at the speed of light on the fiber optic cables. The cost and the installation cost of the fiber optic cable is very high but it is becoming very popular in the home networking and LANs also. In the local area networking, 10baseT/CAT5 cable is most commonly in use.
A server is a computer in network that provides services to the client computers such as logon requests processing, files access and storage, internet access, printing access and many other types of services. Servers are mostly equipped with extra hardware such as plenty of external memory (RAM), more data store capacity (hard disks), high processing speed and other features.

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Ratings R Language, drug content and graphic violence

DVD details

Length
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Screen formats
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