HP Pro 4300 manual Cause Solution

Page 121

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.

 

 

 

System does not power on and the LEDs on the front of the computer are not flashing.

Cause

Solution

System unable to power on.

Press and hold the power button for less than 4 seconds. If the hard drive LED turns green, then:

1.If equipped with a voltage selector, check that the voltage selector (located on the rear of the power supply) is set to the appropriate voltage. Proper voltage setting depends on your region.

2.Remove the expansion cards one at a time until the 5V_aux light on the system board turns on.

3.Replace the system board.

OR

Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on green then:

1.Check that the unit is plugged into a working AC outlet.

2.Open the access panel and check that the power button cable is properly connected to the system board.

3.Check that the power supply cables are properly connected to the system board.

4.Check to see if the 5V_aux light on the system board is turned on. If it is turned on, then replace the power button assembly.

5.If the 5V_aux light on the system board is off, then replace the power supply.

6.Replace the system board.

Solving General Problems 113

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Contents Maintenance and Service Guide HP Compaq Pro 4300 Small Form Factor Business PC About This Book Table of contents Smart ATA Drives 101 107 163 Standard Configuration Features Product Features1Front Panel Components Front Panel Components2Rear Panel Components Rear Panel ComponentsSerial Number Location 4Serial Number and Product ID Location Product FeaturesActivating 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 Utility1Computer Setup F10 Utility Using Computer Setup F10 Utilities2Computer Setup-File Computer Setup-File3Computer 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 CablesSmart ATA Drives Small Form Factor SFF Chassis DesignationsGenerating 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 Power Supply FanTools and Software Requirements Cables and ConnectorsScrews Hard DrivesLithium Coin Cell Battery Spare parts Illustrated parts catalogComputer major components Power supply Description Spare part number Access panelHeat sink includes replacement thermal material Front I/O and power switch assemblyOptical drives Description Spare part numberExpansion cards KeyboardMouse Sequential part number listing Spare parts Illustrated parts catalog Spare parts Illustrated parts catalog Spare parts Illustrated parts catalog Spare parts Illustrated parts catalog Spare parts Illustrated parts catalog Spare parts 1Serial Number and Product ID Location Preparation for DisassemblyPage Description Spare part number Access panel 636924-001 Computer Access PanelDescription Spare part number Front bezel 695080-001 Front BezelBezel Blanks System Board Connections System Board Connector System Board Label Color Component1System Board Connections DIMMs Installing Additional MemoryDDR3-SDRAM DIMMs Populating Dimm Sockets Installing DIMMsPage Graphics cards for models with Windows Removing or Installing an Expansion CardOther boards Remove the access panel Computer Access Panel on Page Page Page Page Page Cable Management Description Spare part number Optical drives DrivesDrive cables Drive Positions Installing and Removing Drives2Drive Positions Mounting Screw Device 3Extra Mounting ScrewsRemoving an Internal 5.25-inch Drive Rotate the drive cage back down to its normal position Installing an Optical Drive into the 5.25-inch Drive Bay 24Connecting the Power and Data Cables Drives Removing an Internal 3.5-inch Drive Page Installing a Drive into the 3.5-inch Internal Drive Bay 33Rotating the Drive Cage Down Drives Page 36Raising the Power Supply Drives Page Page Description Spare part number Baffle 636921-001 BaffleDescription Spare part number Front fan assembly 636922-001 Front Fan AssemblyRemove the chassis fan Front Fan Assembly on Front I/O, Power Switch AssemblyDescription Spare part number Speaker 636925-001 SpeakerDescription Spare part number Heat sink 636919-001 Heat sink47Removing the heat sink screws Heat sink Page Processor Page Pwrcmd Power SupplyPower supply connector label System board connector 4Power supply cable system board connectorSystem Board Page Battery Type 2 Battery Holder Type 1 Battery HolderType 3 Battery Holder Using the Small Form Factor Computer in a Tower Orientation HP/Kensington MicroSaver Security Cable Lock Installing a Security LockPadlock Front Bezel Security Page Japanese Power Cord Requirements Power Cord Set RequirementsGeneral Requirements Country Accrediting Agency Country-Specific RequirementsPost Error Messages Table B-1Numeric Codes and Text Messages Post Numeric Codes and Text MessagesControl panel message Description Recommended action Test under Storage DPS Self-testActivity Blinks Possible Cause Table B-2Diagnostic Front Panel LEDs and Audible CodesActivity Blinks Possible Cause Recommended Action Safety and Comfort Before You Call for Technical Support Troubleshooting Without DiagnosticsRefer to Helpful Hints on page 108 in this guide Helpful HintsPage Table C-1Solving General Problems Solving General ProblemsComputer date and time display is incorrect Cause Solution Computer will not respond to keyboard or mouse CauseCannot remove computer cover or access panel Cause There is no sound or sound volume is too low Cause SolutionPoor performance Cause Solution Advanced Device OptionsUnder Windows System, click Run All apps iconCause Solution Table C-2Solving Power Problems Solving Power ProblemsPower supply shuts down intermittently Cause Solution Some models, is set to the appropriate voltage. Proper Table C-3Solving Hard Drive Problems Solving Hard Drive ProblemsComputer will not boot from hard drive Cause Solution Nonsystem disk/NTLDR missing message Cause SolutionStorage Boot Order Device ConfigurationComputer seems to be locked up Cause Solution Table C-4Solving Media Card Reader Problems Solving Media Card Reader ProblemsCan not write to the media card Cause Computer’s software is used to safely eject the card Table C-5Solving Display Problems Solving Display ProblemsBlank screen no video Cause Solution Adjust screen resolutionDim 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 Table C-6Solving Audio Problems Solving Audio ProblemsThere 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 C-7Solving Printer Problems Solving Printer ProblemsPrinter will not print Cause Solution Printer will not turn on Cause SolutionPrinter prints garbled information Cause Solution Table C-8Solving Keyboard Problems Solving Keyboard and Mouse ProblemsEnter Table C-9Solving Mouse ProblemsTable C-10Solving Hardware Installation Problems Solving Hardware Installation ProblemsControl Panel , and then select Device Manager Security USB SecurityComputer will not start Cause Solution Table C-11Solving Network Problems Solving Network ProblemsManager Network status link light never flashes Cause SolutionDiagnostics reports a failure Cause Solving Memory Problems Out of memory error Cause Solution Table C-12Solving Memory ProblemsMemory count during Post is wrong Cause Solution Insufficient memory error during operation Cause SolutionSolving CD-ROM and DVD Problems Solving Processor ProblemsTable C-13Solving Processor Problems Table C-14Solving CD-ROM and DVD 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 Table C-15Solving USB Flash Drive ProblemsSystem will not boot from USB flash drive Cause Solution Solving Internet Access Problems Solving Front Panel Component ProblemsPorts are set to Enabled in Security USB Security Unable to connect to the Internet Cause SolutionClick Internet Options Select Start Control PanelSolving Software Problems Appendix C Troubleshooting 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 RecoverySystem Recovery when Windows is responding System Recovery when Windows is not responding Creating recovery media Using recovery media Backing up your information Backup and recovery in WindowsUsing the Windows recovery tools Performing a system recoveryUsing f11 recovery tools Cmos Password Security and ResettingResetting the Password Jumper Figure F-1 Cmos button Clearing and Resetting the CmosPage Drive Protection System DPS Select Storage DPS Self-Test Accessing DPS Through Computer SetupTable H-1Specifications SpecificationsAppendix H Specifications Cmos IndexDVI-D Sata
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