HP Book 4150 manual Startup Problems, If a serial modem doesn’t work properly

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Troubleshooting

Solving Problems

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 Parallel and Serial are enabled.

If a serial modem doesn’t work properly

∙Click Start, Help and use the Modem Troubleshooter. If you’re using Windows 2000, click Start, Help, Troubleshooting, and Modem.

∙Check that the cables are properly connected.

∙Check settings in Control Panel (and in Windows NT Diagnostics).

∙Make sure the serial port is working—see the previous heading.

If the USB port is not working

∙Windows NT 4.0 does not support USB devices.

∙Check settings in Control Panel.

∙Contact the vendor of the peripheral device, as well as the OmniBook website, for the latest versions of the USB drivers.

Startup Problems

If the OmniBook doesn’t respond at turn-on

∙Connect the ac adapter.

∙Press blue power button to try turning on the unit.

∙Reset the OmniBook. See “To reset the OmniBook” on page 19.

∙If you get no response, remove the battery and ac adapter—then plug in the ac adapter and try resetting. If you still get no response, the unit requires service.

If the OmniBook doesn’t boot from battery power

∙Make sure the battery is properly inserted.

∙Remove the battery and check its charge level by pressing the pad on the back of the battery. The lights show the charge level.

∙Check battery contacts. If available, try another battery.

82 User’s Handbook

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Contents HP OmniBook User’s Handbook User’s Handbook HP Software Product License Agreement Edition History Contents Troubleshooting Configuring the OmniBookExpanding the OmniBook Specifications and Regulatory Information Support and ServiceIndex 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 adjust the display brightness Using the OmniBook DisplayTo extend the life of the display On the Keyboard Adjusting the Audio SystemTo adjust the volume WindowsTo use the Fn hot keys Using the OmniBook KeyboardOmniBook Library To use the embedded keypad Working in Comfort What is RSI?About Repetitive Strain Injury What can I do to avoid RSI? What causes RSI?What if I experience discomfort? Preparing Your Work Environment Your ChairYour Work Surface Your Work PostureSetting Up Your HP Computing Equipment Your HP MonitorWorking in Comfort Document Holders Monitor Use SpecificationsYour HP Keyboard Mice and Other Input Devices Working in Comfort Headphones and Speakers Comfort and Safety ChecklistGeneral Overall Your HP OmniBook Computer Using Your Mobile ComputerPreparing Your Mobile Work Environment 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 To install hot-swap support Using Plug-In ModulesTake proper action, you could lose data 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 a DVD drive locks up the computer in Windows Audio ProblemsIf sound is not audible If sound doesn’t record Display ProblemsIf the OmniBook is on, but the screen is blank If an external monitor doesn’t work If the screen is difficult to readIf multiple display support doesn’t work in Windows 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 workIf you have problems with infrared communications If you can’t type the euro symbolWindows NT 4.0 does not support infrared communication 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 gets hot Performance ProblemsIf the OmniBook pauses or runs sluggishly If the OmniBook turns off immediately after it turns on Power and Battery ProblemsIf the battery doesn’t charge If the OmniBook keeps beeping If the OmniBook stops responding If the second battery doesn’t charge If the OmniBook doesn’t suspend as expected If the OmniBook doesn’t automatically hibernate as expected Printing ProblemsIf a serial or parallel printer doesn’t print 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 Getting HP OmniBook Assistance Electronic Support ServicesSupport 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 DevicesJapan CanadaDeclaration of Conformity International AddressIndex APMConnecting, See Reference Guide location, 14 Configuring, See Reference Guide location User’s Handbook