HP Book 4150 manual If the screen is difficult to read, If an external monitor doesn’t work

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Troubleshooting

Solving Problems

∙If the OmniBook is cold, allow it to warm up.

If the screen is difficult to read

∙Check whether the display resolution is set to its default setting, 1024 × 768 (XGA). Check this in Start, Settings, Control Panel, Display, Settings.

∙Check brightness (press Fn+F2 to increase brightness).

If an external monitor doesn’t work

∙Check the connections.

∙Press Fn+F5 in case the external monitor was disabled. (Do this three times to return to the state you started from.)

∙The external monitor may not be detected. In the BIOS Setup utility, try setting Video Display Device to Both in the Main menu. See “To run the BIOS Setup utility” on page 62.

∙If the monitor is connected to a video adapter in a docking system, in BIOS Setup make sure the Primary Video Adapter is set to Auto in the Main menu.

If the image on an external monitor or projector is unstable

∙Press Fn+F5 to turn off the built-in display. (Do this three times to return to the state you started from.)

∙Change the display properties of the OmniBook display to match the resolution of the monitor or projector. In Control Panel, open Display, Settings and change the Desktop Area or Screen Area setting.

∙Use a monitor or projector that matches the resolution of the OmniBook display.

If multiple display support doesn’t work in Windows 98

In Windows 98, the computer supports multiple independent displays using the built-in display and an external monitor connected to the monitor port. You can also add an independent display using a video adapter in a docking system.

∙Check the monitor connections.

∙If the monitor is connected to the OmniBook monitor port, you might have to reduce the resolution and number of colors for the built-in display to make more memory available for the external monitor. See the section “Connecting External Devices” in the online Reference Guide.

User’s Handbook

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Contents HP OmniBook User’s Handbook User’s Handbook HP Software Product License Agreement Edition History Contents Expanding the OmniBook Configuring the OmniBookTroubleshooting Index Support and ServiceSpecifications and Regulatory Information Page Introducing the OmniBook Description and Location Getting More InformationIncluded in the OmniBook box Taking InventoryOmniBook-Front View OmniBook FeaturesOmniBook-Side View OmniBook-Back View To set up the OmniBook and Windows Setting Up for the First TimeOr AT Their Local Microsoft Office Operating the OmniBook To start and stop the OmniBook Starting and Stopping the OmniBookTo reset the OmniBook Checking the Status of the OmniBook To check power status and drive activityUsing the OmniBook Pointing Devices To use the built-in pointing devices To extend the life of the display Using the OmniBook DisplayTo adjust the display brightness Windows Adjusting the Audio SystemTo adjust the volume On the KeyboardOmniBook Library Using the OmniBook KeyboardTo use the Fn hot keys To use the embedded keypad About Repetitive Strain Injury What is RSI?Working in Comfort What if I experience discomfort? What causes RSI?What can I do to avoid RSI? Your Chair Preparing Your Work EnvironmentYour Work Posture Your Work SurfaceYour HP Monitor Setting Up Your HP Computing EquipmentWorking in Comfort Your HP Keyboard Monitor Use SpecificationsDocument Holders Mice and Other Input Devices Working in Comfort General Comfort and Safety ChecklistHeadphones and Speakers Overall Preparing Your Mobile Work Environment Using Your Mobile ComputerYour HP OmniBook Computer Working in Comfort Page Managing Battery Power How Power is Managed To install APM for Windows NT Monitoring Battery PowerFrom the Windows Taskbar To check the battery statusTo respond to a low-battery warning On the BatteryOptimum Charging To recharge a batteryBattery life Charging timeAdapter To replace the batterySafety on To install a second batteryPage Expanding the OmniBook Take proper action, you could lose data Using Plug-In ModulesTo install hot-swap support To replace a plug-in module Using Plug-In Modules To identify connectors for external devices Connecting External DevicesTo connect an external monitor To enable the built-in and external displaysTo connect a printer To connect an external keyboard or PS/2 mouseTo insert and remove a PC Card Using PC CardsUsing PC Cards To replace the hard disk drive Installing a Hard Disk DriveInstalling a RAM Expansion Module Installing a RAM Expansion Module Configuring the OmniBook To run the Bios Setup utility Using Bios SetupTo set or change an OmniBook password Configuring Security OptionsTo delete an OmniBook password To attach a security cable Page Troubleshooting If a port on a dock isn’t working Solving Problems Accessory Problems If you can’t boot from a CD in a CD-ROM driveIf sound is not audible Audio ProblemsIf a DVD drive locks up the computer in Windows If the OmniBook is on, but the screen is blank Display ProblemsIf sound doesn’t record If multiple display support doesn’t work in Windows If the screen is difficult to readIf an external monitor doesn’t work If files are corrupted Hard Disk Drive ProblemsIf the OmniBook’s hard drive doesn’t spin If the hard disk makes buzzing or whining noiseIf the touch pad or pointing stick doesn’t work Keyboard and Pointing Device ProblemsIf a special feature on the PS/2 mouse doesn’t work If the pointer is difficult to controlWindows NT 4.0 does not support infrared communication If you can’t type the euro symbolIf you have problems with infrared communications If memory doesn’t increase after adding RAM Memory ProblemsPC Card Pcmcia Problems If a message says you are out of memoryIf an I/O card stops communicating properly If the OmniBook pauses or runs sluggishly Performance ProblemsIf the OmniBook gets hot If the OmniBook keeps beeping Power and Battery ProblemsIf the battery doesn’t charge If the OmniBook turns off immediately after it turns onIf the OmniBook doesn’t suspend as expected If the second battery doesn’t chargeIf the OmniBook stops responding If a serial or parallel printer doesn’t print Printing ProblemsIf the OmniBook doesn’t automatically hibernate as expected If the serial mouse doesn’t work Serial, Parallel, and USB ProblemsIf an infrared printer doesn’t print If the left edge of printed output is missingIf the USB port is not working Startup ProblemsIf the OmniBook doesn’t boot from battery power If a serial modem doesn’t work properlyIf the OmniBook doesn’t boot from the floppy disk drive To run the diagnostic test Testing the OperationSpace To create a diagnostic floppy diskRecovering Software To recover the factory installation of Windows Page Support and Service Support Assistance Electronic Support ServicesGetting HP OmniBook Assistance Customer Support Centers Repair AssistanceCentral/South America Hewlett-Packard Limited Warranty Statement Hewlett-Packard Limited Warranty Statement Specifications and Regulatory Information Bus Architecture Hardware SpecificationsRAM Environmental Limits Major ICs Power Cords Safety InformationLaser Safety Battery SafetyLED Safety Connections to Peripheral Devices Regulatory InformationDeclaration of Conformity CanadaJapan Address InternationalAPM IndexConnecting, See Reference Guide location, 14 Configuring, See Reference Guide location User’s Handbook