Samsung N640CN2021/EHQ Understanding Post, Adjusting the LCD Display, Turning Off Your Computer

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Understanding POST

When you turn on your computer, a routine called POST (Power-On Self-Test) automatically runs to test the computer components. System logo appears on the screen during POST.

Screen messages are built into the computer to report both normal and abnormal system conditions. If an error message appears, take any action suggested in the message. If the message identifies the error condition but does not suggest any corrective action, write down the message and contact manufacturer or an authorised service center for assistance. (See ”Troubleshooting” on page 95.)

Adjusting the LCD Display

You may wish to adjust the LCD (Liquid-Crystal Display) when you begin using your computer. A TFT (Thin-Film Transistor) LCD does not require adjustment for contrast because the contrast is set to remain at maximum.

To adjust the LCD:

•Press <Fn+Right Arrow> to increase the display brightness.

•Press <Fn+Left Arrow> to decrease the display brightness.

Turning Off Your Computer

If your computer has a Windows operating system, turn off your computer by performing the shutdown procedure described in this section. Otherwise, you may lose data.

APM(Advanced Power Management) mode

To turn off the computer:

1.Click Start on the taskbar.

2.Click Shut Down.

3.Select the shut down option.

4.Click OK or Yes.

Using Your Computer for the First Time 7

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Contents Special Features of the User’s Manual Using Your DocumentationUsing the Software User Documentation LCD Introducing Your ComputerBack View of Computer Attaching the AC Adapter Using Your Computer for the First TimeTurning On the Computer Turning On the Computer’s PowerTurning Off Your Computer Adjusting the LCD DisplayAPMAdvanced Power Management mode Understanding PostRestarting Your Computer ACPIAdvanced Configuration and Power Interface modeTips for Using Your Computer Traveling with Your Computer Storing the Computer for Long Periods Handling SpillsKeyboard Using the KeyboardNumeric Keypad Using the Embeded Numeric KeypadDescription of Special Function Keys Using Special Function KeysFn Key Function Combination Using the Keyboard Using the Touchpad Using the TouchpadMouse Action How To Using the Touchpad System Status Lights Reading the System Status LightsReading the System Status Lights Peripheral Connectors Connecting Peripheral DevicesIconConnector Connecting Peripheral DevicesConnecting Peripheral Devices To remove a device from the Flex-Bay Using the Flex-BaySetting the IDE type Drive SwitchRemoving a Device from the Flex-Bay To install a device in the Flex-BayMagnetic fields can destroy the information on a disk Using the Floppy DriveUsing the Floppy Drive Using the CD-ROM Drive Using the CD-ROM DriveUsing the CD-ROM Drive Installing the Power DVD Player MPEG-2 Software Using the DVD-ROM DriveRemoving the Hard Drive Using the Hard DriveRemoving the Hard Drive Installing a Hard DriveCharging the Battery Using the BatteryRemoving the Battery Safely Using the BatteryRemoving the Battery Pack Installing the BatteryUsing the Battery Gauge Monitoring the Battery ChargeSet options under Battery Status and Alarm Settings Using PowerProfiler to Monitor the BatteryBattery Warnings Battery WarningsCondition Action to Take Sens Modem Naming Convention Using the ModemIf you use a simple terminal program Precautions before useIf you use a Windows Communication Program Description of 56K SpecificationInstall the Modem Driver Installing the Modem Driver in Windows MeSelecting a Country Confirming Installation of the Modem DriverDeleting the Modem Driver Installing the Modem Driver in Windows 95/98 Check if Country is selected correctly Command mode Modem CommandsWhat are AT commands? Before Using AT CommandsUsing Command Mode during Communications Using AT commandsDisplay the result value ATO Basic AT CommandsATS0? Menu Function Using System SetupStarting System Setup System Setup MenusNavigation Alternate Function Key System Setup Navigation KeysMain Menu Using System Setup Using System Setup Advanced Menu Security Menu Power Menu Using System Setup Exit Menu Boot MenuUsing System Setup System Passwords Using System SecurityCreating a Password Deleting a Password Locking the Hard Drive Boot Sector Requiring a Boot PasswordLocking the Keyboard Maximum Power Saving Mode Using Power Management OptionsRest Mode Standby ModeRest Mode Precautions Using PowerProfiler To create Fdisk Creating a Save to Disk PartitionTo create Phdisk Insert the System Recovery CD-ROM To reinstall your operating systemTo reinstall your original applications and drivers Resolution and Color Depth Video Features and ConfigurationSelecting a Monitor Type Configuring Display FeaturesVideo Driver Capabilities Changing Color Depth and Resolution Changing the Video Driver Using the TV-Out PortClick OK and follow the prompts that appear on the screen Setting Dual View mode Using Dual View modeLimits and cautions of using Dual View mode Three Displays Using several display devicesPrimary Limits Secondary Two DisplaysLimits on Video Driver while using Dual View mode Maintaining PC Cards Working with PC CardsWindows 98/ Me Using PC CardsWindows NT Working with PC Cards Battery Pack Using OptionsAC Adapter Memory Modules Auto AdapterInstalling a Memory Module Before You Install MemoryRemoving the Memory Module Compartment Door Hard Drives Installing a Memory ModuleCD-ROM Drive Setting the switch on 2nd HDDZIP Drive DVD-ROM Drive ModuleSuperdisk LS-120 Drive Inserting a 120MB LS-120 diskette into the LS-120 drive Docking OptionsIRQs About Drivers and System ResourcesDrivers IRQsService Pack 4 for Windows NT About Drivers and System Resources Computer is not behaving as expected TroubleshootingOperating Problem Computer does nothing when you turn it onPC Card does not work correctly Battery power seems to run out faster than expectedModem Problems Infrared ProblemsWhen using a PBX phone system I cant dial on my modem Troubleshooting Environment SpecificationsHardware Specifications DimensionNi-MH Dumb Battery Lithium-Ion Smart BatteryExternal AC Adapter CD-ROM AbbreviationsPcmcia Voltage collector current Universal serial busVolt Voltage alternating currentAC adapter BootBoot disk GlossaryCmos memory DMA direct memory accessCache memory CardBusIRQ interrupt request line Floppy diskHard drive AddressOperating system RAM random access memoryMBmegabyte MegabitSector ResolutionRefresh rate ROM read-only memoryDiskette a Recording the Computer Hardware ConfigurationDisabled Other Parallel port Enabled Mode Output onlyDisabled 42F8, IRQ 2E8, IRQ 3 Disabled Disabled Bi-directionalSecurity Menu Page Important Safety Instruction Iii Federal Communications Commission FCC Federal Communications Commission FCC Part 68 Statement Canadian Radio Interference Regulations CTR21 StatementClass 1 Laser Productlaserschutzklasse 1 Produkt Country Accredited Applicable Agency Power Cord RequirementCountry-Specific Power cord Set Requirements General RequirementsSEV

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