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Lenovo 9638, 9643, 9644 Advanced settings, Exiting from the Setup Utility program, 48User Guide

Models: TC A55-9636 9640 9645 9644 9643 9638

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Advanced settings

Advanced settings

On some computer models the Advanced settings menu includes a setting to Enable/Disable HyperThreading. This feature works only with HyperThreading-aware operating systems, such as Microsoft Windows XP. The default setting for HyperThreading is Enabled. However, if you select Set Defaults and are using an operating system other than Windows XP, your computer performance might be degraded. Therefore, you should always set HyperThreading to Disabled unless you are sure your operating system supports HyperThreading.

Exiting from the Setup Utility program

When you finish viewing or changing settings, press Esc to return to the Setup Utility program menu (you might have to press Esc several times). If you want to save the new settings, select Save Settings or Save and exit the Setup Utility. Otherwise, your changes will not be saved.

48User Guide

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Lenovo 9638, 9643, 9644, 9645, 9640, TC A55-9636 manual Advanced settings, Exiting from the Setup Utility program, 48User Guide

Contents

User Guide Types 9300, 9301, 9636, 9638, Types 9641, 9642, 9643, 9644,Page User Guide Types 9300, 9301, 9636, 9638, Types 9641, 9642, 9643, 9644,Fourth Edition April Copyright Lenovo 2005, Contents Appendix A. Manual modem Important safety information Conditions that require immediate actionGeneral safety guidelines Service and upgradesStatic electricity prevention Power cords and power adapters Voltage-selectionswitchviiiUser Guide External devices Extension cords and related devicesPlugs and outlets BatteriesHeat and product ventilation xUser GuideElectrical current safety information Operating environmentLithium battery notice Modem safety informationDo not Power supply statement Laser compliance statementAdditional safety information Data safetyCleaning and maintenance xivUser GuideIntroduction xviUser Guide Chapter 1. Arranging your workspace ComfortGlare and lighting Air circulation Electrical outlets and cable lengthsChapter 2. Setting up your computer Connecting your computer4User Guide Chapter 2. Setting up your computer PHONE LINELINE b.Connect the ac adapter cable to the speaker b. Connect the speakers to the computer Completing important tasks Turning on powerFinishing the software installation 8User GuideUpdating your antivirus software Installing other operating systemsUpdating your operating system Shutting down the computer10User Guide Chapter 3. Installing options FeaturesMemory System management featuresInput/output features Internal drivesPreinstalled software PowerSecurity features Operating systems, preinstalled varies by modelAvailable options Weight SpecificationsDimensions EnvironmentSupported operating positions Tools requiredHandling static-sensitivedevices Installing external options Locating connectors on the rear of your computer Obtaining device drivers ConnectorDescription Opening the cover Locating components Accessing system board components and drives Identifying parts on the system board Installing memory Installing PCI adapters What to do nextInstalling internal drives Drive specifications Installing a drive in bay Connecting a serial ATA drive Installing a diskette drive in bay 30User Guide4.Lower the drive bay assembly Security features 32User GuidePassword protection Changing the batteryIntegrated cable lock To change the battery Closing the cover and connecting the cables 36User Guide Chapter 4. Recovering software Creating and using the Product Recovery discPerforming backup and recovery operations Using the Rescue and Recovery workspace Creating and using rescue media NotesCreating and using a Recovery Repair diskette To create rescue media, do the followingTo use rescue media, do one of the following Recovering or installing device drivers Setting a rescue device in the startup sequence Solving recovery problems44User Guide Viewing and changing settings Chapter 5. Using the Setup UtilityStarting the Setup Utility program Using passwordsSetting, changing, and deleting a password User PasswordAdministrator Password Using Security Profile by DeviceChanging the startup device sequence Selecting a startup deviceSelecting a temporary startup device 3.Select Security Profile by DeviceAdvanced settings Exiting from the Setup Utility program48User Guide Using system programs Updating flashing BIOS from a diskette or CD-ROMChapter 6. Updating system programs Updating flashing BIOS from your operating system Recovering from a POST/BIOS update failureb.Click Continue c.Click Downloads and drivers Chapter 6. Updating system programs 52User Guide Chapter 7. Troubleshooting and diagnostics Basic troubleshootingDiagnostic programs Creating a diagnostic CD image PC-Doctorfor WindowsPC-Doctorfor DOS Creating diagnostic diskettes Running diagnostics from the CD or diskettesCleaning the mouse PC-Doctorfor Windows PEOptical mouse Non-opticalmouse 11.Reconnect the mouse cable to the computer 60User Guide Online Books folder Chapter 8. Getting information, help, and serviceInformation resources ThinkVantage Productivity CenterAccess Help Safety and WarrantyHelp and service Using the documentation and diagnostic programs Calling for serviceUsing other services Purchasing additional servicesAppendix A. Manual modem commands Basic AT commandsCommand Extended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commandsVoice commands Attention Switzerland User Telekom PTT SCR-BE Taximpulssperrfilter-12kHzPTT Art. Bakom 93.0291.Z.N 72User Guide 500 Park Offices Drive, Hwy. Appendix B. NoticesLenovo United States, Inc Research Triangle Park, NC U.S.ATelevision output notice TrademarksIndex A Page Page Part Number: 42Y4610 Printed in USA 1P P/N: 42Y4610