IBM G40 manual Solving computer problems

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Solving computer problems

Solution: IRQs for the PCI are all set as 11. The computer does not respond because it cannot share the IRQ with other devices. Refer to the ThinkPad Configuration Program.

Problem: You may receive an “Unsafe Removal of Device” message that mentions the USB 1.x device when you resume from suspend or hibernation in Windows 2000.

Solution: You can safely close this message window. It is displayed because of a USB 2.0 driver problem in Windows 2000. You can get detailed information in the More Information section of the Microsoft Knowledge Base 328580 and 323754. Visit the Microsoft Knowledge Base homepage at http://support.microsoft.com/, type the number of the knowledge base article you need in the search field, and click the Search button.

Problem: The computer cannot play a CD, or the sound quality of a CD is not good.

Solution: Be sure that the disk meets the standard for your country. Usually, a disk that meets the local standards is marked with a CD logo (as shown below) on the label. If you use a disk that does not meet these standards, we cannot guarantee that it will play, or that, if it does play, the sound quality will be good.

Problem: The system shows slow performance.

Solution: This problem may occur when the ac adapter is not attached. To prolong battery life with the higher frequency of Intel’s Pentium 4/Celeron processors, the ThinkPad G40 implements the Dynamic CPU Throttling feature, which reduces CPU frequency dynamically: 1) when the system operates in battery mode; 2) when the system increases power consumption; 3) when system temperature increases.

To avoid or reduce this problem, do one or all of the following:

1.Attach the ac adapter.

2.Close applications not being used.

3.Try to lower system temperature by increasing the fan speed with the Battery MaxiMiser Wizard with Fan Control.

Problem: Playback of DVD is not smooth.

28ThinkPad® G40 Series Service and Troubleshooting Guide

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Contents ThinkPad G40 Series Service and Troubleshooting Guide Page ThinkPad G40 Series Service and Troubleshooting Guide Page Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePlugs and outlets Power cords and power adaptersExtension cords and related devices Batteries Heat and product ventilation CD and DVD drive safetyAdditional safety information Viii ThinkPad G40 Series Service and Troubleshooting Guide Important safety information ThinkPad G40 Series Service and Troubleshooting Guide Laser compliance statement Xii ThinkPad G40 Series Service and Troubleshooting Guide Important safety information Xiv ThinkPad G40 Series Service and Troubleshooting Guide Information about hard disk capacity Important notice for usersImportant regulatory notice for users Xvi ThinkPad G40 Series Service and Troubleshooting Guide Finding information with Access IBM XviiXviii ThinkPad G40 Series Service and Troubleshooting Guide Contents Xx ThinkPad G40 Series Service and Troubleshooting Guide Overview of your new ThinkPad computer Your ThinkPad at a glance Front viewFeatures Diskette drive External interfaceSpecifications Be gentle with your computer Important tips Be careful about where and how you workCaring for your ThinkPad computer Carry your computer properlyOther important tips Take care in setting passwordsHandle storage media and drives properly Cleaning your computer display Cleaning the cover of your computerCleaning your computer keyboard Caring for your ThinkPad computer Caring for your ThinkPad computer Solving computer problems Diagnosing problems Click PC-DoctorTroubleshooting Error messagesSolving computer problems Solving computer problems Select Security IBM Predesktop Area- Access IBM Predesktop Errors without messages Password problem Power switch problemProblem Keyboard problemsTrackPoint problems SolutionStandby or hibernation problems Solving computer problems Computer screen problems Click Power ManagementClick Advanced For Windows XPClick Control Panel For WindowsBattery problems Hard disk drive problems Startup problems Other problems Solving computer problems Solving computer problems Starting IBM Bios Setup Utility Solving computer problems Recovering pre-installed software Click Restore factory contentsReplacing the hard disk drive Handling a hard disk driveReplacing the hard disk drive Replacing the hard disk drive Replacing the battery Replacing the battery Replacing the battery Getting help and service from IBM Calling IBM Getting help and serviceGetting help on the Web IBM FRU Telephone numbersGetting help and service Getting help around the world Getting help and service Usage environment and your Health Appendix A. Wireless related informationWireless Interoperability Enabling Extended Channel Mode Authorized Operation Within the United States and CanadaAppendix A. Wireless related information ThinkPad G40 Series Service and Troubleshooting Guide Before you call for service Appendix B. Warranty informationWarranty service and support Calling for service What this Warranty Does not Cover How to Obtain Warranty Service What IBM Will Do to Correct ProblemsLimitation of Liability Exchange of a Machine or PartYour Additional Responsibilities Jurisdiction Part 2 Country-unique TermsGoverning Law Argentina CAMBODIA, LAOS, and Vietnam Malasia Following Terms Apply to ALL Emea Countries How to Obtain Warranty Service ThinkPad G40 Series Service and Troubleshooting Guide European Union EU ThinkPad G40 Series Service and Troubleshooting Guide Egypt Germany Items for Which IBM is Not Liable SlovakiaPart 3 Warranty Information Warranty PeriodCustomer Replaceable Unit ″CRU″ Service On-site ServiceCourier or Depot Service Customer Carry-In or Mail-In ServiceGuarantee supplement for Mexico Support Center telephone numbersThinkPad G40 Series Service and Troubleshooting Guide Appendix C. Notices Processing date dataReferences to Web site addresses Electronic emission noticesIndustry Canada Class B Emission Compliance Statement Environmental notices for Japan Disposing of a disused lithium batteryHandling a disused ThinkPad battery pack Trademarks ThinkPad G40 Series Service and Troubleshooting Guide Appendix C. Notices ThinkPad G40 Series Service and Troubleshooting Guide Appendix C. Notices Part Number / Numéro de référence 49P1094 NEW FastSite intranet publisher KEY Features and Benefits Conditions of Use Lotus Warranty Support Appendix C. Notices ThinkPad G40 Series Service and Troubleshooting Guide Appendix C. Notices ThinkPad G40 Series Service and Troubleshooting Guide Index ThinkPad G40 Series Service and Troubleshooting Guide Page Part Number 92P2196