HP Book 4150 If you can’t type the euro symbol, If you have problems with infrared communications

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Troubleshooting

Solving Problems

If left CTRL + left ALT doesn’t work on an external keyboard

∙Left CTRL + left ALT should work like the Fn key on an external keyboard. In BIOS Setup, check that External Fn Key is enabled in the System Devices menu. See “To run the BIOS Setup utility” on page 62.

If you can’t type the euro symbol

∙Hold ALT GR when you press the marked key.

∙The euro symbol is not on the U.S. English keyboard. Make sure the embedded keypad is active (Fn+F8) and Num Lock is on, then hold ALT while typing 0128 on the numeric keypad.

∙For Windows NT, if you select a different keyboard layout in Control Panel, you must reinstall the euro software. In Explorer, double-click \Omnibook\Drivers\Euro\Nt4_euro.exe on drive C or on the Recovery CD.

∙Support for the euro symbol requires software available from Microsoft. This software is installed in the factory software, but may not be included with retail Windows.

 

Infrared Problems

Hint

Windows NT 4.0 does not support infrared communication.

If you have problems with infrared communications

∙Windows NT 4.0 does not support infrared devices.

∙Make sure the infrared light path is not blocked. The infrared port is located on the back of the computer.

∙Line up the OmniBook’s infrared port and the other infrared port in as straight a line as possible. The two ports should be no more than 1 meter apart, with no obstructions in between. Noise from nearby equipment can cause transmission errors.

∙Check settings in BIOS Setup utility.

1.From the Start menu, shut down, then restart the OmniBook.

2.When you see the HP logo, press F2 to enter the BIOS Setup utility.

3.From the System Devices menu, check that Infrared Port is enabled and the desired mode is selected.

74 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 Getting More Information Description and LocationTaking Inventory Included in the OmniBook boxOmniBook Features OmniBook-Front ViewOmniBook-Side View OmniBook-Back View Setting Up for the First Time To set up the OmniBook and WindowsOr AT Their Local Microsoft Office Operating the OmniBook Starting and Stopping the OmniBook To start and stop the OmniBookTo reset the OmniBook To check power status and drive activity Checking the Status of the OmniBookUsing 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 On the Keyboard Adjusting the Audio SystemTo adjust the volume WindowsOmniBook 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? Preparing Your Work Environment Your ChairYour Work Surface Your Work PostureSetting Up Your HP Computing Equipment Your HP MonitorWorking 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 Monitoring Battery Power To install APM for Windows NTOn the Battery To check the battery statusTo respond to a low-battery warning From the Windows TaskbarCharging time To recharge a batteryBattery life Optimum ChargingTo replace the battery AdapterTo install a second battery Safety onPage 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 Connecting External Devices To identify connectors for external devicesTo enable the built-in and external displays To connect an external monitorTo connect an external keyboard or PS/2 mouse To connect a printerUsing PC Cards To insert and remove a PC CardUsing PC Cards Installing a Hard Disk Drive To replace the hard disk driveInstalling a RAM Expansion Module Installing a RAM Expansion Module Configuring the OmniBook Using Bios Setup To run the Bios Setup utilityConfiguring Security Options To set or change an OmniBook passwordTo delete an OmniBook password To attach a security cable Page Troubleshooting If you can’t boot from a CD in a CD-ROM drive Solving ProblemsAccessory Problems If a port on a dock isn’t workingIf 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 the hard disk makes buzzing or whining noise Hard Disk Drive ProblemsIf the OmniBook’s hard drive doesn’t spin If files are corruptedIf the pointer is difficult to control Keyboard and Pointing Device ProblemsIf a special feature on the PS/2 mouse doesn’t work If the touch pad or pointing stick doesn’t workWindows NT 4.0 does not support infrared communication If you can’t type the euro symbolIf you have problems with infrared communications If a message says you are out of memory Memory ProblemsPC Card Pcmcia Problems If memory doesn’t increase after adding RAMIf an I/O card stops communicating properly If the OmniBook pauses or runs sluggishly Performance ProblemsIf the OmniBook gets hot If the OmniBook turns off immediately after it turns on Power and Battery ProblemsIf the battery doesn’t charge If the OmniBook keeps beepingIf 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 left edge of printed output is missing Serial, Parallel, and USB ProblemsIf an infrared printer doesn’t print If the serial mouse doesn’t workIf a serial modem doesn’t work properly Startup ProblemsIf the OmniBook doesn’t boot from battery power If the USB port is not workingIf the OmniBook doesn’t boot from the floppy disk drive Testing the Operation To run the diagnostic testTo create a diagnostic floppy disk SpaceRecovering Software To recover the factory installation of Windows Page Support and Service Support Assistance Electronic Support ServicesGetting HP OmniBook Assistance Repair Assistance Customer Support CentersCentral/South America Hewlett-Packard Limited Warranty Statement Hewlett-Packard Limited Warranty Statement Specifications and Regulatory Information Hardware Specifications Bus ArchitectureRAM Environmental Limits Major ICs Safety Information Power CordsBattery Safety Laser SafetyLED Safety Regulatory Information Connections to Peripheral DevicesDeclaration of Conformity CanadaJapan International AddressIndex APMConnecting, See Reference Guide location, 14 Configuring, See Reference Guide location User’s Handbook

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