2After completing this lesson, you will know: Computer hardware familiarizationAssemble a computer system including installation of the motherboard, floppy and hard drives, CD-ROM, and video cardsInstall and manage Windows XP operating system and Microsoft Office 2003Add peripherals and multimedia capabilitiesBasic Troubleshooting & Maintenance
3Computeris a machine for manipulating data according to a list of instructions or programsCollects, processes, stores and output information
4So why use a computer? Work faster & be more precise. Use the same piece of information again in different documents.Make calculations without errors and correct spelling mistakes.Present more professional looking work.Make as many copies and different versions of electronic documents as you like.Store and keep track of your (electronic) documents.Send (electronic) mail and documents to distant relatives and business relations within a matter of minutes.Find information you need, available on one of the millions of computers worldwide that are connected to the Internet.
5Computer System Computer Case – contains all the major components Monitor – is a device that display text & images generated by the computerPrinter – is a device that produces a copy of documents you createKeyboard – is device that lets you type information & instruction into a computerMouse –is a hand held device that lets you select and move items on the screenSpeaker – lets you hear sound generated by your sound card
6What’s inside a computer? Processor/CPUMotherboardRAM (Random Access Memory)Hard disk driveVideo cardAudioPower supplyFloppy driveNetworkingCD-ROM Drive
7What’s inside of the Computer? Processor – also known as CPU or the Central Processing unitEx. Pentium 4 2.4Ghz 400MHzProcessor Type – Pentium 4Clock Speed – 2.4 Ghz (speed at which operations took place inside the CPU)System Bus – 400Mhz (the speed at which RAM memory was accessed)
8What’s inside of the Computer? Motherboard – also known as the mainboard. It contains circuit that perform various functions.
9What’s inside of the Computer? Memory – is technically any form of electronic storage, it is used most often to identify fast, temporary forms of storage. Ex. RAM, ROM, Bios etc.
10What’s inside of the Computer? Hard disk drive – a fixed computer storage medium.
11What’s inside of the Computer? CD-ROM drive – Compact Disk/Read-Only Memory drive, a device that can read information from a CD-ROM.
12What’s inside of the Computer? Sound Card –is a computer expansion card that can input and output sound under control of computer programs.
13What’s inside of the Computer? Modem – The word "modem" is a contraction of the words modulator-demodulator. A modem is typically used to send digital data over a phone line.
14What’s inside of the Computer? Network Interface Card –also known as LAN card. A PC interface to network cabling. It is a piece of computer hardware designed to allow computers to communicate over a computer network
15What’s inside of the Computer? Power supply –changes the alternating current (AC) that comes from an outlet to the direct current (DC) that a computer can use.Note: the capacity of power is measured in watts.
16What’s inside of the Computer? Floppy drive –stores and retrieves information on floppy disk
17“A journey of a thousand miles began with a single step .” Proverbs“A journey of a thousand miles began with a single step .”
37The Operating SystemThe program that controls the operations of the computer’s hardwareControls the allocation and use of:computer memoryCPU (central processing unit) timedisk spaceperipheral devicesThe foundation program on which all software applications depend
45Troubleshooting & Diagnostics Trouble: Start up problemsNo powerFan is not runningNo LEDCause:Power cord/bad power outletAVR or UPS not power onPower supply
46Troubleshooting & Diagnostics Possible Solution:Try another cord /outletTurn on the AVR or UPSReplace power supply
47Troubleshooting & Diagnostics Trouble: Display ProblemThe PC is turned on but the display isn’t workingCause:Power cord is unplugged from the outlet or from the PCDisplay power switch is turned OFFVideo cable is unplugged to the PCVideo card problem/board problem (if on board)
48Troubleshooting & Diagnostics Possible Solution:Plug the power cord to the outlet or PCTurn on display power switchPlug video cableReplace video card/board
49Troubleshooting & Diagnostics Trouble: Mouse problemThe mouse does not respond at allThe mouse moves poorlyCause:The mouse is not properly plugged inDirt on the rollers or the ballDefective mouseDefective mouse port (serial/ps2)
50Troubleshooting & Diagnostics Possible Solution:Plug the mouse properlyTurn the mouse upside down. Rotate the little door to allow the ball to drop out. Rub the ball to clean it, and scrape the rollers to get the dirt away.Replace mouse (PS/2) or USB if problem with port.
51Troubleshooting & Diagnostics Trouble: Keyboard problemKeyboard does not respondCause:Keyboard is not connected
52Troubleshooting & Diagnostics Possible Solution:Try plugging again.Replace keyboard (PS/2) or USB if problem with port.
53Troubleshooting & Diagnostics Trouble: Hard disk problemHard disk not detectedHard disk errorCause:Loose cable or no powerBad block/sector
54Troubleshooting & Diagnostics Possible Solution:Secure data connector/power connectorReplace HDD
55Troubleshooting & Diagnostics Trouble: Audio problemNo sound heard from audioCause:Volume controlDevice driver not installed properly
56Troubleshooting & Diagnostics Possible Solution:Check the volume controlcheck the audio cableReinstall device driver
57Troubleshooting & Diagnostics User problem:Powering off without properly shutdown the computerPlacing water, sodas, or any liquids on the top of CPUInstalling unnecessary application and highly graphical games that can hamper the CPUFixing the computer even no trouble detectedRemoving cover of the unit/PCI slots that exposes the CPU to insects and rats.
60PC Maintenance Using Scandisk (Win9X/ME) & CHKDSK (Win 2K/WinXP) Scandisk/CHKDSK performs the following task:Check the disk surface of the specified drive for read errorsRepairs problems with the logical disk structureProvides disk usage statistics at the end of its operationOpen the Windows Explorer/My ComputerRight Click a drive, select Properties, and then click the Tools tab.Click Check Now to start the process
62PC MaintenanceUsing Defragment - Speed up the system performance of your computer during reading & saving files.Open the Windows Explorer/My ComputerRight Click a drive, select Properties, and then click the Tools tab.Click Defragment Now