HP Pro 4300 manual Solving Keyboard and Mouse Problems, 8Solving Keyboard Problems

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Solving Keyboard and Mouse Problems

If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to the common causes and solutions listed in the following table.

Table 7-8Solving Keyboard Problems

A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/ keyboard, or no function of mouse/keyboard and external drive.

Cause

Solution

If your computer is equipped with USB 3.0 ports, connected USB 3.0 devices can interfere with the wireless keyboard USB receiver.

Connect the wireless keyboard USB receiver to a USB 2.0 port that is separated from ports with USB 3.0 devices. If you still experience interference, you may have to place the connectors farther apart using an external USB hub.

Keyboard commands and typing are not recognized by the computer.

Cause

Solution

 

 

Keyboard connector is not properly connected.

Shut down the computer, reconnect the keyboard to the back

 

of the computer, and then restart the computer.

 

 

Program in use has stopped responding to commands.

Shut down your computer using the mouse and then restart

 

the computer.

 

 

Keyboard needs repairs.

See the Worldwide Limited Warranty for terms and

 

conditions.

 

 

Computer is in Sleep state.

Press the power button to resume from Sleep state.

 

CAUTION: When attempting to resume from Sleep date,

 

do not hold down the power button for more than four

 

seconds. Otherwise, the computer will shut down and you

 

will lose any unsaved data.

 

 

Cursor will not move using the arrow keys on the keypad.

Cause

Solution

 

 

The Num Lock key is on.

Press the Num Lock key. The Num Lock light should be off if

 

you want to use the arrow keys on the keypad. You can

 

disable or enable the Num Lock key in Computer Setup at

 

Advanced > Device Options.

 

 

114 Chapter 7 Troubleshooting Without Diagnostics

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Contents Maintenance & Service Guide Maintenance & Service Guide Iii About This BookTable of contents Sata Data Cable Smart ATA Drives Hard Drive Capacities 103 100105 110Viii All-in One Models 152Overview Product FeaturesPage 1Front Components Front ComponentsComponent 2Side Components Side Components3Rear Components Rear Components5Adjusting Tilt Product Features Adjusting TiltActivating and customizing the software in Windows Activating and Customizing the SoftwareActivating the Windows operating system Installing or upgrading device drivers Downloading Windows 7 updatesCustomizing the monitor display Click Settings Change PC Settings Downloading Windows 8 updatesComputer Setup F10 Utilities Computer Setup F10 UtilityComputer Setup F10 Utilities Using Computer Setup F10 Utilities1Computer Setup F10 Utility Computer Setup F10 Utility Computer Setup-File2Computer Setup-File 3Computer Setup-Storage Computer Setup-StorageSata Defaults OptionDescriptionStorage Options ESATA Port Removable Media BootSata Emulation Max eSATA SpeedShortcut to Temporarily Override Boot Order Boot OrderDPS Self-Test 4Computer Setup-Security Computer Setup-SecurityMaster Boot Record Network BootSlot Security System IDsSystem Security Configuration Secure BootDriveLock Security 5Computer Setup-Power Computer Setup-Power6Computer Setup-Advanced for advanced users Computer Setup-AdvancedOption Heading Power-On Options Onboard Devices Bios Power-OnBus Options Device OptionsVGA Configuration Recovering the Configuration SettingsAMT Configuration Serial ATA Hard Drive Characteristics Serial ATA Sata Drive Guidelines and FeaturesSata Hard Drives Sata Hard Drive CablesHard Drive Capacities Smart ATA DrivesRoutine Care and Disassembly Preparation Generating Static Electrostatic Discharge InformationPreventing Electrostatic Damage to Equipment Relative Humidity Event 55% 40% 10%Grounding the Work Area Personal Grounding Methods and EquipmentRecommended Materials and Equipment Static Shielding Protection LevelsOperating Guidelines Cleaning the Computer Case General Cleaning Safety PrecautionsCleaning the Keyboard Routine CareCleaning the Monitor Service ConsiderationsCleaning the Mouse Tools and Software RequirementsLithium Coin Cell Battery Cables and ConnectorsHard Drives Preparing to Disassemble the Computer Removal and Replacement Procedures All-in One AIO ChassisHinge Cover Panel Page Memory Access Panel Page Drive Access Panel Page Optical Drive Page Hard Drive 16Removing the hard drive mounting screws Hard Drive Slide the hard drive out of the cage Memory Location System Board Label Channel 1Identifying Sodimm locationsPage Page Replacing the Battery Lift the battery out of its holder 26Removing and replacing a coin cell battery Type Heat Sink Cover Lift the cover from the computer Heat Sink Thermal Module Page Remove the heat sink see Heat Sink Thermal Module on ProcessorPage Top Panel Webcam Module Page Stand Rear Cover Fan 44 Fan screws Converter Board CMI Sidekey Board Disconnect the cable from the sidekey board 52System board shield location System Board Shield System Board ShieldPage Wlan Module Page Speakers Page Stand bracket Page System Board Updating Smbios Information Setup Field Name Comment Label Press F10 to enter Computer SetupSystem Board Hard Drive and Optical Drive Cables and Connectors Page Display Cable Page Front Bezel Display Panel Lift the main system bracket assembly off the front bezelPage Page Samsung Power Switch Assembly Page Safety and Comfort Before You Call for Technical Support Troubleshooting Without DiagnosticsHelpful Hints Page Troubleshooting Without Diagnostics Solving General Problems1Solving General Problems Computer date and time display is incorrect Cause SolutionThere is no sound or sound volume is too low Cause Solution Solving General ProblemsCannot remove computer cover or access panel Cause Poor performance Cause SolutionUnder Windows System, click Run All apps iconCause Solution 2Solving Power Problems Solving Power ProblemsPower supply shuts down intermittently Cause Solution Solving Power Problems 3Solving Hard Drive Problems Solving Hard Drive ProblemsSolving Hard Drive Problems Computer seems to be locked up Cause Solution Solving Media Card Reader Problems Solving Media Card Reader Problems4Solving Media Card Reader Problems Can not write to the media card CauseComputer’s software is used to safely eject the card Solving Display Problems Solving Display Problems5Solving Display Problems Dim characters Cause Solution No Connection, Check Signal Cable displays on screen Cause Image is not centered Cause SolutionSelect ImageControl/ Horizontal Position or Vertical Out of Range displays on screen Cause Certain typed symbols do not appear correct Cause 6Solving Audio Problems Solving Audio Problems Sound from headphones is not clear or muffled Cause Solving Audio Problems There is no sound or sound volume is too low Cause Line-in jack is not functioning properly Cause7Solving Printer Problems Solving Printer ProblemsPrinter will not print Cause Solution Printer will not turn on Cause SolutionPrinter prints garbled information Cause Solution Solving Printer Problems8Solving Keyboard Problems Solving Keyboard and Mouse Problems9Solving Mouse Problems Solving Keyboard and Mouse Problems10Solving Hardware Installation Problems Solving Hardware Installation ProblemsControl Panel , and then select Device Manager Security USB SecurityComputer will not start Cause Solution Solving Hardware Installation Problems11Solving Network Problems Solving Network ProblemsNetwork status link light never flashes Cause Solution Solving Network ProblemsManager Diagnostics reports a failure Cause Solving Memory Problems Out of memory error Cause Solution 12Solving Memory ProblemsMemory count during Post is wrong Cause Solution Insufficient memory error during operation Cause SolutionSolving CD-ROM and DVD Problems Solving Processor ProblemsSolving Processor Problems 13Solving Processor ProblemsMovie will not play in the DVD drive Cause Solution Security Network BootCannot eject compact disc tray-load unit Cause Solving USB Flash Drive ProblemsUSB flash drive not found identified Cause Solution 15Solving USB Flash Drive ProblemsSystem will not boot from USB flash drive Cause Solution Solving Internet Access Problems Solving Front Panel Component ProblemsSolving Front Panel Component Problems Ports are set to Enabled in Security USB SecurityClick Internet Options Select Start Control PanelSolving Software Problems Solving Software ProblemsTroubleshooting Without Diagnostics Contacting Customer Support Why run HP PC Hardware Diagnostics HP PC Hardware DiagnosticsHow to access and run HP PC Hardware Diagnostics Downloading HP PC Hardware Diagnostics to a USB device Restoring and recovering in Windows Backup and RecoverySystem Restore System RecoveryBackup and Recovery System Recovery when Windows is respondingSystem Recovery when Windows is not responding Creating recovery media Using recovery media Backing up your information Backup and recovery in WindowsBackup and recovery in Windows 8 Performing a system recoveryFollow the on-screen instructions Using f11 recovery tools Post Error Messages Post Numeric Codes and Text Messages Post Error Messages1Numeric Codes and Text Messages Control panel message Description Recommended action2Diagnostic Front Panel LEDs and Audible Codes Interpreting Post Diagnostic Front Panel LEDsActivity Blink Possible Cause Recommended Action Cmos Password Security and ResettingEstablishing a Setup or Power-on Password Establishing a Setup or Power-on PasswordResetting the Setup and Power-on Password Resetting Cmos Japanese Power Cord Requirements Power Cord Set RequirementsGeneral Requirements Country Accrediting Agency Country-Specific RequirementsAppendix B Specifications SpecificationsTable B-1Specifications All-in One ModelsMax Operating Power Power SupplyAll-in One Models Cmos IndexSata
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