Solving Display Problems, Adjust screen resolution | HP Pro 4300

Solving Display Problems

If you encounter display problems, see the documentation that came with the monitor and to the common causes and solutions listed in the following table.

Table C-5Solving Display Problems

Blank screen (no video).

Cause	Solution

Monitor is not turned on and the monitor light is not on.	Turn on the monitor and check that the monitor light is on.

Bad monitor.	Try a different monitor.

The cable connections are not correct.	Check the cable connection from the monitor to the computer
	and to the electrical outlet.

You may have a screen blanking utility installed or energy	Press any key or click the mouse button and type your
saver features are enabled.	password (if set).

System ROM is corrupted; system is running in Boot Block	Reflash the system ROM with the latest BIOS image.
Emergency Recovery Mode (indicated by eight beeps).

You are using a fixed-sync monitor and it will not sync at the	Be sure that the monitor can accept the same horizontal
resolution chosen.	scan rate as the resolution chosen.

Computer is in Sleep state.	Press the power button to resume from Sleep state.
	CAUTION: When attempting to resume from Sleep state,
	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.

Monitor cable is plugged into the wrong connector.

Systems may have a monitor connection on both the motherboard or an add-in card. Try moving the monitor connection to a different connector on the back of the computer

Monitor settings in the computer are not compatible with the	1. In Control Panel, select Category from the View by list,
monitor.	then under Appearance and Personalization, select
	Adjust screen resolution.
	To access Control Panel in Windows 7, click Start, and
	then select Control Panel.
	To access Control Panel in Windows 8, from the Start
	screen, type c, and then select Control Panel from the
	list of applications.
	2. Expand the Resolution box, and then use the sliding
	control to reset the resolution.

Monitor is configured to use an input that is not active.	Use the monitor's on-screen menu controls to select the
	input that is being driven by the system. Refer to the
	monitor's user documentation for more information on the on-
	screen controls and settings.

Solving Display Problems 121

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HP Pro 4300 manual Table C-5Solving Display Problems, Blank screen no video Cause Solution, Adjust screen resolution

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 Features 1Front Panel Components Front Panel Components 2Rear Panel Components Rear Panel Components Serial Number Location 4Serial Number and Product ID Location Product Features Activating and Customizing the Software Activating and customizing the software in WindowsActivating the Windows operating system Downloading Windows 7 updates Installing or upgrading device driversCustomizing the monitor display Click Settings Change PC Settings Downloading Windows 8 updates Computer Setup F10 Utilities Computer Setup F10 Utility 1Computer Setup F10 Utility Using Computer Setup F10 Utilities 2Computer Setup-File Computer Setup-File 3Computer Setup-Storage Computer Setup-StorageSata Defaults OptionDescription Storage Options ESATA Port Removable Media BootSata Emulation Max eSATA Speed Boot Order Shortcut to Temporarily Override Boot OrderDPS Self-Test 4Computer Setup-Security Computer Setup-Security Master Boot Record Network BootSlot Security System IDs System Security Secure Boot ConfigurationDriveLock Security 5Computer Setup-Power Computer Setup-Power Computer Setup-Advanced 6Computer Setup-Advanced for advanced usersOption Heading Power-On Options Onboard Devices Bios Power-OnBus Options Device Options Recovering the Configuration Settings VGA ConfigurationAMT Configuration Serial ATA Hard Drive Characteristics Serial ATA Sata Drive Guidelines and FeaturesSata Hard Drives Sata Hard Drive Cables Smart ATA Drives Small Form Factor SFF Chassis Designations 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 Levels Operating Guidelines Cleaning the Computer Case General Cleaning Safety PrecautionsCleaning the Keyboard Routine Care Cleaning the Monitor Service ConsiderationsCleaning the Mouse Power Supply Fan Tools and Software Requirements Cables and ConnectorsScrews Hard Drives Lithium Coin Cell Battery Illustrated parts catalog Spare partsComputer major components Power supply Description Spare part number Access panelHeat sink includes replacement thermal material Front I/O and power switch assembly Optical drives Description Spare part numberExpansion cards Keyboard Mouse 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 Panel Description Spare part number Front bezel 695080-001 Front Bezel Bezel Blanks System Board Connector System Board Label Color Component System Board Connections1System Board Connections Installing Additional Memory DIMMsDDR3-SDRAM DIMMs Populating Dimm Sockets Installing DIMMsPage Removing or Installing an Expansion Card Graphics cards for models with WindowsOther boards Remove the access panel Computer Access Panel on Page Page Page Page Page Cable Management Drives Description Spare part number Optical drivesDrive cables Installing and Removing Drives Drive Positions2Drive Positions Mounting Screw Device 3Extra Mounting Screws Removing 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 Baffle Description Spare part number Front fan assembly 636922-001 Front Fan Assembly Remove the chassis fan Front Fan Assembly on Front I/O, Power Switch Assembly Description Spare part number Speaker 636925-001 Speaker Description Spare part number Heat sink 636919-001 Heat sink 47Removing the heat sink screws Heat sink Page Processor Page Pwrcmd Power Supply Power supply connector label System board connector 4Power supply cable system board connector System Board Page Battery Type 2 Battery Holder Type 1 Battery Holder Type 3 Battery Holder Using the Small Form Factor Computer in a Tower Orientation HP/Kensington MicroSaver Security Cable Lock Installing a Security Lock Padlock Front Bezel Security Page Power Cord Set Requirements Japanese Power Cord RequirementsGeneral Requirements Country Accrediting Agency Country-Specific Requirements Post 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-test Activity Blinks Possible Cause Table B-2Diagnostic Front Panel LEDs and Audible Codes Activity Blinks Possible Cause Recommended Action Safety and Comfort Before You Call for Technical Support Troubleshooting Without Diagnostics Refer 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 Cause Cannot remove computer cover or access panel Cause There is no sound or sound volume is too low Cause SolutionPoor performance Cause Solution Advanced Device Options Under Windows System, click Run All apps icon Cause Solution Solving Power Problems Table C-2Solving 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 Problems Computer will not boot from hard drive Cause Solution Nonsystem disk/NTLDR missing message Cause SolutionStorage Boot Order Device Configuration Computer seems to be locked up Cause Solution Solving Media Card Reader Problems Table C-4Solving 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 resolution Dim characters Cause Solution Image is not centered Cause Solution No Connection, Check Signal Cable displays on screen CauseSelect 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 Problems Sound from headphones is not clear or muffled Cause There is no sound or sound volume is too low 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 Solution Printer prints garbled information Cause Solution Table C-8Solving Keyboard Problems Solving Keyboard and Mouse Problems Enter Table C-9Solving Mouse Problems Table C-10Solving Hardware Installation Problems Solving Hardware Installation ProblemsControl Panel , and then select Device Manager Security USB Security Computer will not start Cause Solution Table C-11Solving Network Problems Solving Network Problems Manager Network status link light never flashes Cause Solution Diagnostics 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 Solution Solving CD-ROM and DVD Problems Solving Processor ProblemsTable C-13Solving Processor Problems Table C-14Solving CD-ROM and DVD Problems Movie will not play in the DVD drive Cause Solution Security Network Boot Cannot eject compact disc tray-load unit Cause Solving USB Flash Drive Problems Table C-15Solving USB Flash Drive Problems USB flash drive not found identified Cause SolutionSystem 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 Solution Click Internet Options Select Start Control Panel Solving Software Problems Appendix C Troubleshooting Without Diagnostics Contacting Customer Support Why run HP PC Hardware Diagnostics HP PC Hardware Diagnostics How 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 Recovery System 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 Windows Using the Windows recovery tools Performing a system recovery Using f11 recovery tools Cmos Password Security and Resetting Resetting 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 Setup Table H-1Specifications Specifications Appendix H Specifications Cmos Index DVI-D Sata