Processor Performance Controls | HP 355385-001 guide

Power

Processor Performance Controls

Windows XP Home and Windows XP Professional provide unique software that allows the user to control processor performance. The CPU (central processing unit) speed can be set for optimal performance or for optimal power conservation.

For example, the software can be set to trigger an automatic change in processor speed when the power source changes between AC power and battery power, or when notebook use changes between active and idle.

Accessing Windows XP Processor Controls

To access Windows XP Home and Windows XP Professional processor performance controls, select Start > Control Panel > Performance and Maintenance > Power Options > Power Schemes.

The user sets the desired Power Scheme and that, in turn, sets the processor controls. Each Power Scheme for AC power or battery power equates to one of the following processor levels:

■None: Always runs at the highest performance state.

■Adaptive: Performance state is selected based on CPU demand.

■Degrade: Starts at lowest performance state, then uses linear performance reduction (stop clock throttling) as the battery discharges.

■Constant: Always runs at the lowest performance state.

Software Guide

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HP 355385-001 manual Processor Performance Controls, Accessing Windows XP Processor Controls

Contents

Software Guide Page Contents Multimedia Security Playing DVDs and Video CDs with InterVideo Software Updates and Restorations Index Task Use This Power Source Selecting a Power Source Standby Standby, Hibernation and ShutdownHibernation Shutdown Choosing Standby, Hibernation or Shutdown When Resuming After a Short IntervalWhen Resuming After a Week or More When External Power Supply Is Disrupted or Uncertain When Using Infrared or Drive Media Standby, Hibernation and Shutdown Procedures Identifying Power Controls and Indicators Identifying power controls and indicators Task Procedure Results Using the Default Power SettingsTurning the Notebook or Display On or Off Initiating or Resuming from Hibernation Task Procedure Result Initiating or Resuming from Standby Using Emergency Shutdown Procedures Accessing Power Options Window Setting Power PreferencesDisplaying Power Meter Icon on Taskbar Using a Security Password Setting or Changing a Power Scheme Processor Performance Controls Accessing Windows XP Processor Controls Power Scheme AC Power Battery Power Security To Protect Against This Risk Use This Feature Security Features Quick Reference Forgotten Passwords About PasswordsUsing HP and Windows Passwords About QuickLock Fn+F6 Setting, Changing or Deleting Power-On Passwords About Power-On PasswordsSetting a Power-On Password Changing a Power-On Password Deleting a Power-On Password Entering Power-On Passwords Setting, Changing or Deleting Administrator Passwords About Administrator PasswordsSetting an Administrator Password Changing an Administrator Password Deleting an Administrator Password Entering Administrator Passwords Using Other Device Security Setting System Information Options Using System InformationProtecting System Information Protecting Your Notebook Step Use this Security Measure For More Information Using Security Software Measures Connecting an Optional Security Cable Connecting the optional security cable Protecting Playback Using CDs and DVDs Observing the Copyright Warning Using Hotkeys and Quick Launch Buttons Select Models Identifying the multimedia hotkeys and Quick Launch buttons HP Image Zone Select Models Reprogramming the Quick Launch Buttons Select Models InterVideo Home Theater Select Models Playing CDs Playing Audio and Video CDs with Windows Media PlayerGeneral DVD Tips Playing DVDs or Video CDs Using DVD Region Settings Changing Region Settings Using InterVideo WinDVD Creator Select Models Choosing Recording Media Preparing to Use InterVideo WinDVD Creator Creating DVDs and Video CDs Sonic RecordNow Updating Software Software Updates Restorations Accessing Notebook ROM Information Accessing Notebook Product Information Downloading and Installing Software Updates Downloading and Installing ROM Updates Downloading ROM Update Installing ROM Update Downloading and Installing Other Software Recovery Procedures Step Description Refer to Before You Begin Setting a Restore Point Using the System Restore UtilityRestoring to a Restore Point Repairing or Reinstalling Drivers Reinstalling Applications from Your Hard Drive Repairing or Reinstalling Applications Reinstalling Applications from the Driver Recovery CD Repairing or Reinstalling Operating System Repairing the Operating System Backing Up Your Data About Operating System Reinstallation Reinstalling the Operating System Turn on the notebook by briefly pressing the power button Updating Reinstalled Software Reinstalling Other Software Configuring Your Notebook Installing a Retail Version of an Operating SystemOpening the Setup Utility Navigating and Selecting in the Setup Utility Main Menu Setting Description DefaultSecurity Menu Exit Menu Boot Menu Restoring Setup Utility Default Settings Using the Help and Support CenterExiting the Setup Utility Software Updates and Restorations Obtaining Support Telephone Numbers Using Support Telephone Numbers Preparing to Call Technical Support Index Fn 3-2 hotkeys 3-2prt sc Index-3 Index-4