pc support & repair
DESCRIPTION
PC Support & Repair. Chapter 3 Computer Assembly. Objectives. After completing this chapter, you will meet these objectives: Open the case. Install the power supply. Attach the components to the motherboard and install the motherboard. Install internal drives. - PowerPoint PPT PresentationTRANSCRIPT
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PC Support & RepairChapter 3Computer Assembly
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Objectives• After completing this chapter, you will meet these objectives:▫Open the case. ▫ Install the power supply. ▫Attach the components to the motherboard and install the
motherboard. ▫ Install internal drives. ▫ Install drives in external bays. ▫ Install adapter cards. ▫Connect all internal cables. ▫Re-attach the side panels and connect external cables to the
computer. ▫Boot the computer for the first time.
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Open the Case• Size & shape is the ?▫ Form factor
• Prep your work area▫ Lighting, antistatic mats, container for screws, clutter-free
• Each case opens differently
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Install the Power Supply•Fits one way•Screws attach it to case
•VIRTUAL DESKTOP: ▫POWER SUPPLY
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Install CPU & Fan•Put in before mobo goes
in case▫Put on mat & wear strap
•DO NOT touch CPU contacts
•Notice where Pin 1 is
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Install CPU & Fan•Apply thermal compound▫Helps conduct heat away
from CPU▫Small amount
• If using an old CPU▫Clean off old compound▫Isopropyl alcohol ONLY &
lint-free cloth
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Heat Sink & Fan•Heat sink draws heat
away from CPU▫Fan draws heat away
from heat sink
•Has a 3-pin power connector for fan
•Visit site…
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Install CPU, Heat Sink, and Fan
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Install RAM•Make sure it’s compatible!•RAM▫Temp data storage▫Volatile▫More= better performance
•Align notches•Press until side tabs click
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Install Motherboard•Standoffs/spacers
prevent mobo from touching case
•Align I/O with case
•Align screw holes
•Tighten screws
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Install the Motherboard
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Projects•Computer Assembly Lab▫Install Motherboard, CPU, Heat sink/Fan, RAM
•Virtual Desktop: Motherboard
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Install Internal Hard Drive• Internal Bays▫3.5”
•HDD▫Hard disk drive
•Screw drive into bay
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Install Optical Drive•5.25” Drive Bay▫Accessible outside case
•Optical CD/DVD▫Molex power connector▫PATA (IDE/EIDE) data cable
•Screw into bay
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Install Floppy Drive•3.5” Drive Bay▫Accessible outside case
•Floppy Drive (FDD)▫Berg power connector▫FDD data cable
•Screw into bay
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Lab•Virtual Desktop: Internal Drives
•Virtual Desktop: Drives in External Bays
•Computer Assembly Lab 5: Install Drives
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Install Adapter Cards•PCI•PCIe•AGP
•NIC•Wireless NIC•Video Card
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Lab•Virtual Desktop: Adapter Cards
• Install Adapter Cards
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Connect the Power Cables•Data & Power▫Mobo power & AUX
▫SATA power (15-pin)
▫Molex power
▫Berg power
▫Fan (3-pin)
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Connect the Data Cables•PATA▫Ribbon▫40 or 80-pin▫Stripe Pin 1
Closer to power
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Connect the Data Cables•SATA▫7-pin
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Connect the Data Cables•Floppy▫34-pin▫Stripe for pin 1▫Put in backwards
Drive activity light flash
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Review- Q• Your motherboard has 2 PATA connectors. How many hard
drives could be connected to this mobo?▫4
• Your motherboard has 1 Floppy connector. How many floppy drives can be connected?▫2
• A SATA data cable has how many pins?▫7
•What happens if the twist on a floppy cable is closer to the motherboard?▫Drive activity light stays on or flashes
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Lab•Virtual Desktop: Internal Cables
• Lab 7 & 8: Install Internal Power and Data Cables
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Connect Front Panel Cables• Power button & LED lights▫ Look in manual to see what you
have
• Power button▫Hold for 5 seconds to power down
• Power & drive activity LEDs▫+ is Pin 1
• System speaker•USB ports• Front audio ports
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Finishing Up•Reattach Case with screws•Connect external cables▫Monitor ▫Keyboard ▫Mouse ▫USB ▫Ethernet ▫Power (LAST)
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Booting Up 1st Time•BIOS does a check of
internal components▫POST
All hardware works Beeps indicate info Codes differ! GOOD= 1 usually BAD= blank screen &
multiple beeps
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BIOS•BIOS data saved to CMOS chip▫Complementary Metal Oxide Semiconductor ▫Older Mobo- ROM is powered by battery
Battery dies= lost BIOS data
•To enter/change BIOS settings…▫Press key during POST/Splash screen▫DEL or F12, depends on PC
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BIOS•Main – System time, date, HDD type, etc. •Advanced – Infrared port settings, parallel port
settings, etc. •Security – Password settings to setup utility •Others – Low battery alarm, system beep, etc. •Boot – Boot order of the computer •Exit – Setup utility exit
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Info in BIOS• CPU▫Brand, Speed, How Many
• RAM▫Brand, Speed, Slots,
Installed Slots• HD▫Brand, Size, Type, # of
Controllers•Optical Drive▫Brand, Type
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Customize BIOS•Time & Date•Disabling Devices▫Disable on-board video
if using a vide card•Boot Order•Clock Speed▫Reduce for cooler op▫Increase= faster but
hotter (KEEP COOL)
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Customize BIOS Security• BIOS Password▫Supervisor▫User (Full, Limited, View,
None)• Drive Encryption▫Wrong password, no boot
or read data• TPM▫Encryption keys
• Lojack▫Read 3.2.2.3 & report
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BIOS PC Health•Temperature•Fan Speeds•Clock & Bus Speeds• Intrusion Detection▫If case has a switch
•Diagnostics
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Project•Boot the Computer/ BIOS Lab
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Upgrading & Installing More•Why install more drives?
•After installing new hardware, install drivers▫A signed driver is one that passed the Windows hardware
quality lab test. ▫Installing an unsigned driver can cause system instability,
error messages, and boot problems. ▫During installation, if an unsigned driver is detected, you
are asked whether you want to stop or continue the installation. Only install unsigned drivers if you trust the source of the drivers.
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Project• Lab 3.3.3.2 Upgrade Hardware
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Review
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Summary• Computer cases come in a variety of sizes and configurations. Many of
the computer components must match the form factor of the case.• The CPU is installed on the motherboard with a heat sink and fan
assembly.• RAM is installed in RAM slots on the motherboard.• Adapter cards are installed in PCI and PCIe expansion slots on the
motherboard.• Hard disk drives are installed in 3.5 in. (8.9 cm.) drive bays located inside
the case.• Optical drives are installed in 5.25 in. (13.34 cm.) drive bays that can be
accessed from outside the case.• Floppy drives are installed in 3.5 in. (8.9 cm.) drive bays that can be
accessed from outside the case.
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Summary • Power supply cables are connected to all drives and the
motherboard.• Internal data cables transfer data to all drives.• External cables connect peripheral devices to the computer.• Beep codes signify when hardware malfunctions.• The BIOS setup program displays information about the
computer components and allows the user to change system settings.
• Computer components require periodic upgrades and replacement parts.
• Additional hard drives can provide fault tolerance and the ability to install additional operating systems.
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PC Support & RepairChapter 3Computer Assembly