HP V5221EA, V5224TU, V5221TU, V5219TU, V5218TU, V5215LA, V5215TU, V5300 Processor performance controls

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Processor performance controls

CAUTION To prevent overheating, do not obstruct vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as a printer, or a soft surface, such as pillows, thick rugs, or clothing, to block the airflow. Overheating can damage the computer and reduce processor performance.

NOTE In some cases, a computer may operate at a higher speed on external power than on battery power. If the battery power is extremely low, the computer may attempt to conserve power by reducing processor speed and graphics performance.

Windows XP enables you to manage the processor performance controls by selecting a power scheme. The processing speed can be set for optimal performance or for optimal power conservation.

Processor performance controls are managed in the Power Options Properties dialog box. To access Windows XP processor performance controls, Select Start > Control Panel > Performance and Maintenance > Power Options > Power Schemes tab.

The power scheme you select determines how the processor performs when the computer is plugged into external power or is running on battery power. Each power scheme for external power or battery power sets a specific processor state.

After a power scheme has been set, no other intervention is required to control the performance of the computer processor. The following table describes the processor performance on external and battery power for the available power schemes.

Power scheme

Processor performance while on

Processor performance while on

 

external power

battery power

 

 

 

Home/Office Desk

Always runs at the highest performance

Performance state is determined based on

 

state.

CPU demand.

 

 

 

Portable/Laptop (default) *

Performance state is determined based on

Performance state is determined based on

 

CPU demand.

CPU demand.

Presentation

Performance state is determined based on

 

CPU demand.

CPU performance is lower on battery power, then steadily decreases as the battery discharges.

Always On

Always runs at the highest performance

Always runs at the highest performance

 

state.

state.

 

 

 

Minimal Power Management

Performance state is determined based on

Performance state is determined based on

 

CPU demand.

CPU demand.

Max Battery

Performance state is determined based on

 

CPU demand.

CPU performance is lower on battery power, then steadily decreases as the battery discharges.

* It is recommended that you use the Portable/Laptop power scheme.

ENWW

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Contents
Page Page Table of contents Power Multimedia DrivesExternal Media Cards Wireless Select Models OnlyExternal Devices Memory ModulesSoftware Update and Recovery Setup UtilityModem and Local Area Network SecurityRoutine Care TroubleshootingElectrostatic Discharge 163Enww Enww Select Hardware tab Device Manager ComponentsKeys Top componentsComponent Description TouchPad Buttons and switches Lights Display components Front componentsRight-side components Rear componentsComponentDescription Enww Left-side components Bottom components Wireless antennae select models only Additional hardware components Labels Rated input power SpecificationsInput Power Rating Operating environmentFeature Support Expansion port input/output signalsEnww TouchPad TouchPad and KeyboardUsing an external mouse Using the TouchPadSetting TouchPad preferences Hotkeys KeyboardHotkey quick reference Hotkey proceduresDisplay and clear system information fn+esc Function Key CombinationOpen the Print Options window fn+f2 Open the Help and Support Center fn+f1Open a Web browser fn+f3 Initiate standby fn+f5 Switch the screen image fn+f4Decrease screen brightness fn+f7 Initiate QuickLock fn+f6Increase screen brightness fn+f8 Play, pause or resume an audio CD or a DVD fn+f9Keypads Using the embedded numeric keypadEnabling and disabling the embedded numeric keypad ComponentSwitching key functions on the embedded numeric keypad Using an external numeric keypadEnabling or disabling num lock mode as you work TouchPad and Keyboard Power control and light locations PowerPower Task Recommended power source Power sourcesConnecting the AC adapter Standby Standby and hibernationHibernation When a reliable power supply is unavailable When you leave your workInitiating standby, hibernation or shutdown Enww Using emergency shutdown procedures Default power settingsTask Procedure Result Turning the computer or display on or offInitiating or resuming from standby Task ProcedureHibernate Initiating or restoring from hibernationAccessing Power Options Properties Power optionsDisplaying the Power Meter icon Setting a security prompt Setting or changing a power schemeProcessor performance controls Inserting or removing a battery pack Battery packsCharging a battery pack Interpreting charge indicators Monitoring the charge of the battery packObtaining accurate charge information Displaying charge information on the screenIdentifying low-battery conditions Managing low-battery conditionsLow-battery condition Critical low-battery conditionWhen external power is available Resolving low-battery conditionsWhen a charged battery pack is available When no power source is availableWhen to calibrate Calibrating a battery packHow to calibrate Charging the battery packDischarging the battery pack Conserving power as you work Conserving battery powerRecharging the battery pack Disposing of a used battery pack Storing a battery packSelecting power conservation settings Drive care DrivesIDE drive light Hard drive Enww Tighten the hard drive cover screws DVD-ROM ±RW/R Optical drivesInserting an optical disc Removing an optical disc with power Removing an optical disc without power Avoiding standby or hibernation Identifying the installed optical drive Using the optical driveMultimedia Multimedia hardwareInserting an optical disc Removing an optical disc with power Removing an optical disc without power Using media activity hotkeys Using the audio features Using the audio-out headphone jack Using the audio-in microphone jackUsing S/PDIF digital audio select models only Adjusting the volume Using the external monitor port Using the video featuresUsing the S-Video-out jack HP Mobile Remote Control PC Card version Remote control select models onlyInserting the battery PC Card version Enww Storing the remote control in the PC Card slot Button quick reference PC Card version Media playing, press to pause the media Back Button Function in Microsoft WindowsHP Mobile Remote Control PC Card version component functions Inserting the battery ExpressCard version HP Mobile Remote Control ExpressCard versionEnww Storing the remote control in the ExpressCard slot Button quick reference ExpressCard version Press to stop the current media activity, such as Press to go back to the previous track or chapter Problem Possible solution Troubleshooting the remote controlInstalling multimedia software from a CD select models only Identifying preinstalled multimedia softwareMultimedia software Using multimedia software Protecting the CD or DVD write process Protecting playbackObserving the copyright warning Changing DVD region settingsMultimedia Media Reader cards select models only External Media CardsInserting a digital card Stopping or removing a digital card PC Cards select models only Configuring a PC CardStopping or removing a PC Card Inserting a PC CardEnww ExpressCards Configuring an ExpressCardSelecting an ExpressCard Inserting an ExpressCard Enww Stopping or removing an ExpressCard Connecting a USB device Using a USB deviceExternal Devices Required USB software Stopping a USB deviceConnecting a 1394 device Using a 1394 device select models onlyStopping a 1394 device Required 1394 softwareUsing the expansion port Adding or replacing memory modules Memory ModulesEnww Enww Enww Effects of increasing memory Video memory settings select models only Wireless features Wireless Select Models OnlyIdentifying an 802.11 wireless device Wireless controls Wireless devices select models only Setting up a Wlan in your home Connecting to a public Wlan Connecting to a Wlan in your homeUsing wireless security features Bluetooth wireless devices select models only Modem Modem and Local Area NetworkConnecting the modem cable Selecting a location setting Connecting a country-specific modem cable adapterViewing the current country selection Select Start Control Panel Network and Internet Connections Adding new locations when travelingCheck the telephone line type Solving travel connection problemsClear the check box for Wait for dial tone before dialing Using preinstalled communication softwareLocal area networks Enww To protect against Use this security feature Security featuresSecurity Guidelines for setting passwords PasswordsPasswords Function Passwords set in WindowsQuickLock Administrator password Passwords set in the Setup UtilityManaging an administrator password Entering an administrator password Power-on passwordManaging a power-on password Entering a power-on passwordAntivirus software Critical updatesFirewall software Optional security cable Security Setup Utility access Setup UtilitySetup Utility language Setup Utility defaults Main menu Setup Utility menusSecurity menu Select To do thisDiagnostics menu System Configuration menuSetup Utility Software updates Software Update and RecoveryHP Software Update Accessing computer information Software updates and the HP Web siteDownloading a Bios update Installing a Bios update Downloading and installing other software Safeguarding your information System recoveryUsing System Restore Creating a restore pointRestoring to a restore point Reinstalling applicationsReinstalling applications from the hard drive Reinstalling applications from discsRepairing the operating system Back up your system Reinstalling the operating systemReinstall the operating system Update reinstalled software Reinstalling device drivers and other softwareSoftware Update and Recovery Routine Care Hardware maintenanceBattery pack Display TouchPad and keyboardUsing Disk Cleanup Using Disk DefragmenterDrives Regular tune-ups Traveling and shipping Quick checklist TroubleshootingComputer will not start up Software is functioning abnormally Computer screen is blankComputer is extremely warm Computer is turned on, but is not respondingAn external device is not working Enww Customer Care Taking the computer to a service partnerPreparing to contact Customer Care Contacting Customer Care by e-mail or telephoneTroubleshooting Preventing electrostatic discharge Electrostatic DischargeHandling drives Handling internal componentsGrounding methods Index Symbols/NumericsEnww Wlan Rated input power specifications Wlan label Writable media XD-Picture Card XD Index
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