HP 402 G1 manual Solving memory problems, 12Solving Memory Problems

Page 89

Solving memory problems

If you encounter memory problems, some common causes and solutions are listed in the following table.

CAUTION: Power may still be supplied to the DIMMs when the computer is turned off (depending on the Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a memory module.

For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system.

NOTE: The memory count will be affected by configurations with the Management Engine (ME) enabled. The ME uses 8MB of system memory in single channel mode or 16MB of memory in dual-channel mode to download, decompress, and execute the ME firmware for Out-of-Band (OOB), third-party data storage, and other management functions.

Table 7-12Solving Memory Problems

System will not boot or does not function properly after installing additional memory modules.

Cause

Solution

 

 

A memory module is not installed in the DIMM1 or XMM1 socket.

Ensure that a memory module is installed in the DIMM1 or XMM1

 

socket on the system board. This socket must be populated with

 

a memory module.

Memory module is not the correct type or speed grade for the system or the new memory module is not seated properly.

Replace module with the correct industry-standard device for the computer. On some models, ECC and non-ECC memory modules cannot be mixed.

Out of memory error.

Cause

Solution

You have run out of memory to run the application.

Check the application documentation to determine the memory requirements.

Memory count during POST is wrong.

Cause

Solution

 

 

The memory modules may not be installed correctly.

Check that the memory modules have been installed correctly

 

and that proper modules are used.

 

 

Integrated graphics may use system memory.

No action required.

 

 

Insufficient memory error during operation.

 

 

 

Cause

Solution

 

 

Too many Terminate and Stay Resident programs (TSRs) are

Delete any TSRs that you do not need.

installed.

 

 

 

You have run out of memory for the application.

Check the memory requirements for the application or add more

 

memory to the computer.

 

 

Solving memory problems 81

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Contents Maintenance & Service Guide Product notice Iii Safety warning noticeIv Safety warning notice Table of contents System board callouts Troubleshooting without diagnostics103 100104 Vii107 106110 ViiiStandard configuration features Product featuresDrive configuration may vary by model Standard configuration featuresSerial number location Product featuresRear panel components Activating and customizing the software Downloading Windows 8 updatesActivating and customizing the software in Windows Activating the Windows operating systemIllustrated parts catalog Illustrated parts catalogMajor components Front bezel Fan sink Power supply, 250 W Processors Item Component Access panelMiscellaneous parts Miscellaneous partsHard drives Mass storage devicesTB, 7200 rpm, 3.5 inch 500-GB, 7200 rpm, 3.5 inch Optical driveSata hard drives Serial ATA Hard Drive CharacteristicsSata hard drive cables Sata data cableElectrostatic discharge information Smart ATA drivesGenerating static Preventing electrostatic damage to equipmentGrounding the work area Personal grounding methods and equipmentStatic Shielding Protection Levels Method VoltageRecommended materials and equipment Operating guidelinesCleaning the computer case General cleaning safety precautionsCleaning the keyboard Routine careCleaning the display Service considerationsCleaning the mouse Tools and software requirementsHard drives Cables and connectorsLithium coin cell battery Preparing to disassemble the computer Removal and replacement proceduresAccess panel Description Installing and removing drivesRemoving a slim optical disc drive Page Page Installing a slim optical disc drive Page Removing and replacing a 3.5-inch hard drive Remove the access panel see Access panel onPage Page Page To remove the front bezel Front bezelPage GB memory module PC3-12800 4GB memory module PC3-12800 Remove the access panel see Access panel on MemoryMemory Page Expansion cards Page Fan Page RTC battery RTC batteryFan sink Page Before removing the processor, follow these steps ProcessorPage Power supply Page To remove the system board System boardSystem board Updating Smbios InformationSetup Field Name Comment Label System ID SetupSys Bd Label Component System board calloutsRTC battery Front I/O USB connectorNetwork connector and USB VGA connectorComputer Setup F10 Utilities Computer Setup F10 Utility1Computer Setup F10 Utility Using Computer Setup F10 UtilitiesComputer Setup F10 Utility 2Computer Setup-File Computer Setup-File3Computer Setup-Storage Computer Setup-Storage4Computer Setup-Security Computer Setup-SecurityMaster Boot Record Network BootDevice Security USB SecurityDriveLock Security System Security theseSystem Security Legacy Support to disabled Secure BootConfiguration 5Computer Setup-Power Computer Setup-Power6Computer Setup-Advanced for advanced users Computer Setup-AdvancedVGA Configuration AMT Configuration PCI SERR# Generation. Default is enabledBus Options Device OptionsRecovering the configuration settings Safety and comfort Before you call for technical support Troubleshooting without diagnosticsHelpful hints Solving general problems 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 Cause SolutionCannot remove computer cover or access panel Cause Solution Poor performance Cause SolutionUnder Windows System, click Run Solution Solving power problems Solving power problems2Solving Power Problems Power supply shuts down intermittently Cause Solution3Solving Hard Drive Problems Solving hard drive problemsSolving hard drive problems 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 cardSolving display problems Solving display problems5Solving Display Problems Blank screen no video Cause SolutionScreen resolution Image is not centered Cause Solution Dim characters Cause SolutionSelect the monitor’s Auto-Adjustment option No Connection, Check Signal Cable displays on screen CauseOut of Range displays on screen Cause Monitor’s on-screen display menu6Solving Audio Problems Solving audio problemsSolving audio problems There is no sound or sound volume is too low Cause Sound from headphones is not clear or muffled CauseSelect Device Manager Line-in jack is not functioning properly Cause7Solving Printer Problems Solving printer problemsSolving printer problems 8Solving Keyboard Problems Solving keyboard and mouse problems9Solving Mouse Problems Solving hardware installation problemsShut down the computer using the keyboard ComponentsComputer will not start Cause Solution 10Solving Hardware Installation ProblemsSolving network problems Solving network problems11Solving Network Problems Power SavingsAdvanced Device Options S5 Wake on LAN Wake-on-LAN feature is not functioning Cause SolutionNetwork status link light never flashes Cause Solution Diagnostics reports a failure Cause Solution Correct operating modeSettings for the board Cable CorrectlyNew network card will not boot Cause Solution 12Solving Memory Problems Solving memory problemsSolving memory problems 13Solving Processor Problems Solving processor problemsSome fans only operate when needed Make sure the processor heat sink is installed properlySolving CD-ROM and DVD problems Solving CD-ROM and DVD problems14Solving CD-ROM and DVD Problems Computer Setup utilityCannot eject compact disc tray-load unit Cause Movie will not play in the DVD drive Cause SolutionSolving front panel component problems Solving USB flash drive problemsSolving USB flash drive problems 15Solving USB Flash Drive ProblemsSet to Enabled in Security USB Security Solving internet access problemsUnable to connect to the Internet Cause Solution Click Internet OptionsSolving software problems Solving software problemsContacting customer support How to access and run HP PC Hardware Diagnostics Uefi HP PC Hardware DiagnosticsWhy run HP PC Hardware Diagnostics Uefi Diagnostic section, click HP Uefi Support Environment Backing up your information Backup and RecoveryBackup and recovery in Windows Follow the on-screen instructions Backup and Recovery Performing a system recoveryTo recover information you previously backed up Using f11 recovery tools Post Error Messages Post Error MessagesPost Numeric Codes and Text Messages 1Numeric Codes and Text MessagesPost Numeric Codes and Text Messages Reseat power supply fan Flash Screen Image Corrupted Flash Screen image has errorsReconfigure card resources and/or run Computer Setup or Windows utilitiesEmulation to IDE, and select File Save Try a different USB key device for Inventory error during MEBx executionSystem Bios version Functionality contained in the system BiosGeneral error during MEBx execution System Bios and ME firmware2Diagnostic front panel LEDs and audible codes Interpreting Post diagnostic front panel LEDsPossible Cause Recommended Action White Power LED On ActivityPossible Cause Recommended Action Interpreting Post diagnostic front panel LEDsRecovery Mode section of the Desktop Red Power LED flashes sevenInstall a TXT capable processor Previously enabled on thisEstablishing a Setup or Power-on password Password Security and Resetting CmosEstablishing a Setup or Power-on password Password Security and Resetting Cmos Resetting the Setup and Power-on passwordClearing and resetting the Cmos Page General requirements Power Cord Set RequirementsJapanese Power Cord Requirements Country Accrediting Agency Country-specific requirementsCountry-specific requirements Appendix B Statement of Volatility Statement of VolatilityEnter the F10 setup utility Appendix C Specifications SpecificationsSpecifications Index 103 Problems All-in One chassis Fan Password Fan sinkNetwork Setup password 103 Power Software Printer Problems Product ID location Removal and replacement
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