HP 1105 manual Table A-2Solving Power Problems

Page 94

Solving Power Problems

Common causes and solutions for power problems are listed in the following table.

Table A-2Solving Power Problems

Power supply shuts down intermittently.

Cause

Solution

 

 

If equipped with a voltage selector, voltage selector switch

Select the proper AC voltage using the selector switch.

on rear of computer chassis (some models) not switched to

 

correct line voltage (115V or 230V).

 

 

 

Power supply will not turn on because of internal power

Replace the power supply.

supply fault.

 

 

 

Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause

Solution

 

 

 

Processor thermal protection activated:

1.

Ensure that the computer air vents are not blocked and

A fan may be blocked or not turning.

 

the processor cooling fan is running.

2.

Open the access panel, press the power button, and

OR

 

see if the processor fan (or other system fan) spins. If

The heat sink is not properly attached to the processor.

 

the fan does not spin, make sure the fan cable is

 

plugged onto the system board header.

 

3.

If fan a plugged in and not spinning, replace it.

 

 

 

Solving Power Problems 87

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Contents Maintenance & Service Guide Maintenance & Service Guide About This Book IiiTable of contents Illustrated parts catalog 105 101103 107All-in One Model 139 ViiiProduct Features OverviewFront Components Product FeaturesComponent Side Components Rear Components Activating and customizing the software Installing and Customizing the SoftwareActivating the Windows Operating System Run Windows Update monthly thereafter Downloading Windows 8 updatesCustomizing the monitor display Computer Setup F10 Utility Computer Setup F10 UtilitiesComputer Setup F10 Utility Using Computer Setup F10 Utilities1Computer Setup F10 Utility Computer Setup-File 2Computer Setup-FileSata Defaults Computer Setup-Storage3Computer Setup-Storage OptionDescriptionSata Emulation Removable Media BootStorage Options ESATA Port Max eSATA SpeedShortcut to Temporarily Override Boot Order Boot OrderDPS Self-Test Computer Setup-Security 4Computer Setup-SecuritySlot Security Network BootMaster Boot Record System IDsSystem Security Configuration Secure BootDriveLock Security Computer Setup-Power 5Computer Setup-Power6Computer Setup-Advanced for advanced users Computer Setup-AdvancedOption Heading Power-On Options Bus Options Bios Power-OnOnboard Devices Device OptionsVGA Configuration Recovering the Configuration SettingsAMT Configuration Sata Hard Drives Serial ATA Sata Drive Guidelines and FeaturesSerial ATA Hard Drive Characteristics Sata Hard Drive CablesSmart ATA Drives Serial ATA Sata Drive Guidelines and FeaturesHard Drive Capacities Generating Static Routine Care, and Disassembly PreparationElectrostatic Discharge Information Relative Humidity Event 55% 40% 10%Personal Grounding Methods and Equipment Routine Care, and Disassembly PreparationPreventing Electrostatic Damage to Equipment Static Shielding Protection LevelsGrounding the Work Area Recommended Materials and EquipmentOperating Guidelines General Cleaning Safety PrecautionsCleaning the Computer Case Routine CareCleaning the Keyboard Cleaning the MonitorCables and Connectors Service ConsiderationsCleaning the Mouse Tools and Software RequirementsLithium Coin Cell Battery Hard DrivesComputer major components Illustrated parts catalogIllustrated parts catalog Computer major components Cables Boards Webcam moduleDescription Spare part number Fan/blower Misc PartsHP Business Digital Headset not illustrated Description Spare part number Optical drive Mass storage devices not illustratedSequential part number listing Hard drivesIllustrated parts catalog Removal and Replacement Procedures All-in One AIO Chassis Preparing to Disassemble the ComputerRear Cover Description Spare part number Rear cover 669985-001Stand Description Spare part number Stand 669988-001Page Foot assembly Description Spare part number Foot assembly 669986-001Page Memory Cover Page Memory Description Spare part numberPage Wlan Module Page RTC Battery Page Backlight Controller Panel manufacturer Jumper setting Speakers Page Optical Drive Page Optical Drive Cables and Connector Page Hard Drive Page Hard Drive Cables and Connector Page Fan Description Spare part number Fan 669981-001Page Side I/O Cover Description Spare part number Side I/O cover 710543-001Page Webcam Module Description Spare part number Webcam module 710544-001Page System Board Cover Page Display Cable Description Spare part number Display cable 669996-001Page System Board Security Bracket Front Bezel Description Spare part number Front bezel 710542-001Display Panel Display Panel Panel manufacturer Screw hole labelCMI panels Panel manufacturer Jumper setting Troubleshooting Without Diagnostics Safety and Comfort Before You Call for Technical SupportHelpful Hints Page Table A-1Solving General Problems Solving General ProblemsSolving General Problems Computer date and time display is incorrect Cause SolutionPoor performance Cause Solution There is no sound or sound volume is too low Cause SolutionCannot remove computer cover or access panel Cause Advanced Device OptionsAll apps icon Under Windows System, click RunCause Solution Table A-2Solving Power Problems Solving Power ProblemsSolving Power Problems Power supply shuts down intermittently Cause SolutionSome models, is set to the appropriate voltage. Proper Solving Hard Drive Problems Solving Hard Drive ProblemsTable A-3Solving Hard Drive Problems Storage Boot Order Nonsystem disk/NTLDR missing message Cause SolutionComputer will not boot from hard drive Cause Solution Device ConfigurationComputer seems to be locked up Cause Solution Table A-4Solving Media Card Reader Problems Solving Media Card Reader ProblemsCan not write to the media card Cause Solving Media Card Reader Problems Blank screen no video Cause Solution Solving Display ProblemsTable A-5Solving Display Problems Adjust screen resolutionSolving Display Problems Dim characters Cause SolutionNo 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 Solving Audio Problems Solving Audio ProblemsTable A-6Solving Audio Problems There is no sound or sound volume is too low Cause Sound from headphones is not clear or muffled CauseLine-in jack is not functioning properly Cause Table A-7Solving Printer Problems Solving Printer ProblemsSolving Printer Problems Printer will not print Cause SolutionPrinter prints garbled information Cause Solution Solving Keyboard and Mouse Problems Solving Keyboard and Mouse ProblemsTable A-8Solving Keyboard Problems Table A-9Solving Mouse Problems EnterTable A-10Solving Hardware Installation Problems Solving Hardware Installation ProblemsSolving Hardware Installation Problems Control Panel , and then select Device ManagerComputer will not start Cause Solution Solving Network Problems Solving Network ProblemsTable A-11Solving Network Problems Network status link light never flashes Cause Solution ManagerDiagnostics reports a failure Cause Solving Memory Problems Out of memory error Cause Solution Solving Memory ProblemsTable A-12Solving Memory Problems Memory count during Post is wrong Cause SolutionTable A-13Solving Processor Problems Solving Processor ProblemsSolving CD-ROM and DVD Problems Table A-14Solving CD-ROM and DVD ProblemsSecurity Network Boot Solving CD-ROM and DVD ProblemsMovie will not play in the DVD drive Cause Solution Solving USB Flash Drive Problems Cannot eject compact disc tray-load unit CauseUSB flash drive not found identified Cause Solution Solving USB Flash Drive ProblemsTable A-15Solving USB Flash Drive Problems System will not boot from USB flash drive Cause SolutionPorts are set to Enabled in Security USB Security Solving Front Panel Component ProblemsSolving Internet Access Problems Unable to connect to the Internet Cause SolutionSelect Start Control Panel Solving Internet Access ProblemsClick Internet Options Solving Software Problems Solving Software Problems Contacting Customer Support Why run HP PC Hardware Diagnostics Uefi HP PC Hardware DiagnosticsHow to access and run HP PC Hardware Diagnostics Downloading HP PC Hardware Diagnostics to a USB device Backup and recovery in Windows Backing up your informationPerforming a system recovery Using the Windows recovery toolsUsing Windows 8 operating system media purchased separately Using f11 recovery toolsFollow the on-screen instructions Page Post Error Messages Post Numeric Codes and Text Messages Appendix D Post Error MessagesROM Download to Disable to Control panel message Description Recommended actionPost Numeric Codes and Text Messages Test under Storage DPS Self-test Bios Appendix D Post Error Messages Options SERR# Generation Disable Activity Beeps Possible Cause Recommended ActionReplace one device at a time Activity Beeps Possible Cause Recommended Action Board needs to be replaced Japanese Power Cord Requirements Power Cord Set RequirementsGeneral Requirements Country-Specific Requirements Appendix E Power Cord Set RequirementsCountry Accrediting Agency All-in One Model SpecificationsAll-in One Model Cleaning 27 keyboard problems IndexSata
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