Solving general problems | HP 8300E B8U11UT#ABA guide

Computer date and time display is incorrect.

Cause	Solution

RTC (real-time clock) battery may need to be replaced.	First, reset the date and time under Control Panel
NOTE: Connecting the computer to a live AC outlet	(Computer Setup can also be used to update the RTC date
NOTE: Connecting the computer to a live AC outlet	and time). If the problem persists, replace the RTC battery.
prolongs the life of the RTC battery.	See the Removal and Replacement section for instructions
	on installing a new battery, or contact an authorized dealer or
	reseller for RTC battery replacement.

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

Cause

Solution

The Num Lock key may be on.

Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys. The Num Lock key can be disabled (or enabled) in Computer Setup.

There is no sound or sound volume is too low.

Cause	Solution

System volume may be set low or muted.	1.	Check the F10 BIOS settings to make sure the internal
		system speaker is not muted (this setting does not
		affect the external speakers).
	2.	Make sure the external speakers are properly
		connected and powered on and that the speakers'
		volume control is set correctly.
	3.	Use the system volume control available in the
		operating system to make sure the speakers are not
		muted or to increase the volume.

Poor performance is experienced.

Cause	Solution

Processor is hot.	1.	Make sure airflow to the computer is not blocked. Leave
		a 10.2-cm (4-inch) clearance on all vented sides of the
		computer and above the monitor to permit the required
		airflow.
	2.	Make sure fans are connected and working properly
		(some fans only operate when needed).
	3.	Make sure the processor heat sink is installed properly.

Hard drive is full.	Transfer data from the hard drive to create more space on
	the hard drive.

Low on memory.	Add more memory.

Hard drive fragmented.	Defragment hard drive.

Program previously accessed did not release reserved	Restart the computer.
memory back to the system.

Solving general problems 111

Image 119

HP 8300E B8U11UT#ABA manual Solving general problems, Computer date and time display is incorrect Cause Solution

Contents

Maintenance & Service Guide Maintenance & Service Guide Iii About This Book Iv About This Book Table of contents Routine Care and Disassembly Preparation 110 105107 109 Viii Models 156 157 Overview Product FeaturesPage Component Front components1Front components 2Side components Side components 3Rear components Rear componentsRear components 6Adjusting swivel Product Features Adjusting the tilt/swivel base Height adjustable/recline stand optional Page Downloading Microsoft Windows updates Installing and customizing the softwareInstalling the operating system Protecting the software Installing or upgrading device drivers Windows systemsAccessing disk image ISO files Computer Setup F10 utilities Computer Setup F10 Utility Using Computer Setup F10 utilities 1Computer Setup-File Computer Setup-File 2Computer Setup-Storage Computer Setup-Storage 3Computer Setup-Security Computer Setup-Security System IDs Network BootMaster Boot Record Slot Security DriveLock Security System Security 4Computer Setup-Power Computer Setup-Power Bios Power-On Computer Setup-Advanced5Computer Setup-Advanced Option Heading Power-On Options Operations VGA ConfigurationBus Options Device Options How to access and run HP PC Hardware Diagnostics HP PC Hardware DiagnosticsWhy run HP PC Hardware Diagnostics Downloading HP PC Hardware Diagnostics to a USB device Sata Hard Drive Cables Serial ATA Sata Drive Guidelines and FeaturesSerial ATA Hard Drive Characteristics Sata Hard Drives Hard Drive Capacities Serial ATA Sata Drive Guidelines and FeaturesSmart ATA Drives Routine Care and Disassembly Preparation Relative Humidity Event 55% 40% 10% Electrostatic discharge informationGenerating static Preventing electrostatic damage to equipment Static Shielding Protection Levels Personal grounding methods and equipmentGrounding the work area Recommended materials and equipment Operating Guidelines Routine Care General cleaning safety precautionsCleaning the computer case Cleaning the keyboard Tools and software requirements Service ConsiderationsCleaning the display Cleaning the mouse Hard drives Cables and connectorsLithium coin cell battery Preparing to disassemble the computer Removal and Replacement Procedures All-in One AIO Chassis Cable management cover Removing the rear port cover Synchronizing the optional wireless keyboard or mouse Installing an access panel security screwPage Access panel Page Stand Page Lower panel 12Lower panel location To remove the access panel Metal plate is located under the stand Metal platePage Replacing drives Remove the access panel see Access panel on Replacing drivesPage Page Page 23Optical drive location Replacing the optical disc drivePage Page Memory Location System Board Label Channel 1Identifying Sodimm locationsPage Replacing the battery Page 34Serial port location To remove the serial port Serial portPage Webcam module Remove the access panel see Access panel on Webcam modulePage Page 40Converter board location To remove the converter board Converter boardPage Inch Touch sensor board Page To remove the heat sink Heat sinks Graphics board and processorGraphics heat sink Processor heat sink model Processor heat sink model Lift the heat sink assembly from the computer Processor MSATA Solid-State Drive To remove the mSATA SSD Wlan modulePage Page 54Graphics board location To remove the graphics board Graphics boardPage 56Speaker location To remove the speakers Speakers Fan 59Side panel locations To remove the side panels Side panels Rotate the panel out and off of the computer 61Power supply location To remove the power supply Power supply 63Removing the power supply Power supply Page Remove the processor see Processor on System boardPage Page Page Page Setup Field Name Comment Label Updating Smbios Information Card reader board Page Power button board Page Page Front bezel Page Right 4 screws Bottom 2 screw Antenna Page Display panel To install the antenna, reverse the removal proceduresPage 81Display panel screw locations 6300 models CMI panel Page Page Inch Hood sensor Page Hard drive and optical drive cables and connectors Page Safety and comfort Troubleshooting Without DiagnosticsSafety and comfort 1Solving general problems Solving general problemsTroubleshooting Without Diagnostics Poor performance is experienced Cause Solution Solving general problemsComputer date and time display is incorrect Cause Solution There is no sound or sound volume is too low Cause Solution Cause Solution Solving general problems 3Solving hard drive problems Solving power problemsSolving hard drive problems 2Solving power problems Solving hard drive problems Computer seems to be locked up Cause Solution Computer will not boot from hard drive Cause SolutionStorage Boot Order Can not write to the media card Cause Solving media card reader problemsSolving media card reader problems 4Solving media card reader problems Blank screen no video Cause Solution Solving display problems5Solving display problems Out of Range displays on screen Cause Solution Solving display problems 6Solving audio problems Solving audio problems Advanced Device Options Internal Speaker Solving audio problemsEnable digital CD audio for this CD-ROM device is Sound from headphones is not clear or muffled Cause Printer will not print Cause Solution Solving printer problems7Solving printer problems There is no sound or sound volume is too low Cause Printer prints garbled information Cause Solution Solving keyboard and mouse problemsSolving keyboard and mouse problems 8Solving keyboard problems 9Solving Mouse Problems Computer will not start Cause Solution Solving hardware installation problemsSolving hardware installation problems 10Solving hardware installation problems Troubleshooting Without Diagnostics 11Solving network problems Solving network problemsSolving network problems Diagnostics reports a failure Cause Solution New network card will not boot Cause Solving memory problemsSolving memory problems 12Solving memory problems Insufficient memory error during operation Cause Solution Out of memory error Cause SolutionMemory count during Post is wrong Cause Solution 13Solving processor problems Solving processor problemsSolving CD-ROM and DVD problems Solving processor problems Movie will not play in the DVD drive Cause Solution Cannot eject compact disc tray-load unit Cause Solving USB flash drive problemsSolving USB flash drive problems 15Solving USB flash drive problems 16Solving internet access problems Solving internet access problems Solving internet access problems 17Solving software problems Solving software problems Post Error Messages Control panel message Description Recommended action Post Error MessagesPost Numeric Codes and Text Messages 1Numeric Codes and Text Messages Post Numeric Codes and Text Messages Verify monitor is attached and turned Security Drivelock Security. For each Test under Storage DPS Self-testOptions Sata Emulation to IDE, Select File Save Changes and Exit Post Error Messages Bios Occurred prior to the ME firmware update Post Numeric Codes and Text Messages Possible Cause Recommended Action Interpreting Post diagnostic front panel LEDs2Diagnostic front panel LEDs and audible codes Activity Desktop Management Guide for more Post Error Messages Cmos Password Security and Resetting Password Security and Resetting Cmos Establishing a Setup or Power-on password Resetting the Setup and Power-on password Clearing and resetting the Cmos Cmos button Locate, press, and hold the Cmos button in for five seconds General requirements Power Cord Set RequirementsJapanese Power Cord Requirements Country Accrediting Agency Country-specific requirements Models SpecificationsAppendix B Specifications Table B-1Specifications Models Table B-2Specifications Cmos Index Sata