Quick Setup and Getting Started Guide
Page 23
If the system beeps, then the keyboard should be the default VGA source in Computer Setup. You can select which source will be operating correctly. ● Check all the ..., or USB device) from the system before turning it does not restart, press the power button to Interpreting POST Diagnostic Front Panel LEDs and Audible Codes on the keyboard or pressing the power button. The computer will restart if automatic start the computer. ● Reconfigure your computer after installing a non-plug...
If the system beeps, then the keyboard should be the default VGA source in Computer Setup. You can select which source will be operating correctly. ● Check all the ..., or USB device) from the system before turning it does not restart, press the power button to Interpreting POST Diagnostic Front Panel LEDs and Audible Codes on the keyboard or pressing the power button. The computer will restart if automatic start the computer. ● Reconfigure your computer after installing a non-plug...
Quick Setup and Getting Started Guide
Page 30
Beeps and flashing LEDs ... times, once every second, followed by a two second pause, and the computer beeps six times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Memory is installed incorrectly ... once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Graphics card is ...: DIMM 1 must always be installed. 2. If you are codes for specific problems. 3. Cause Solution Wrong memory modules were used in the wrong location. Replace ...
Beeps and flashing LEDs ... times, once every second, followed by a two second pause, and the computer beeps six times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Memory is installed incorrectly ... once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Graphics card is ...: DIMM 1 must always be installed. 2. If you are codes for specific problems. 3. Cause Solution Wrong memory modules were used in the wrong location. Replace ...
Quick Setup and Getting Started Guide
Page 31
... action. Once bad card is identified, remove and replace bad option card. 3. Interpreting POST Diagnostic Front Panel LEDs and Audible Codes If you hear beeps, see if fault goes away. 2. Replace the system board. ENWW Basic Troubleshooting 23 Table 2 Solving Hardware Installation Problems (continued...) Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps ten times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution For systems with integrated graphics, replace the system board.
... action. Once bad card is identified, remove and replace bad option card. 3. Interpreting POST Diagnostic Front Panel LEDs and Audible Codes If you hear beeps, see if fault goes away. 2. Replace the system board. ENWW Basic Troubleshooting 23 Table 2 Solving Hardware Installation Problems (continued...) Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps ten times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution For systems with integrated graphics, replace the system board.
Desktop Management Guide
Page 21
6 Boot Block Emergency Recovery Mode Boot Block Emergency Recovery Mode permits system recovery in the unlikely event of the ROM that contains code that checks for a valid system BIOS image when the system is turned on. ● If the system BIOS image is valid, the system starts ...for BIOS image files. The Boot Block is a flash-protected section of a ROM flash failure. If the system successfully reprograms the ROM, the system will beep 8 times. Turn the power on to occur during a BIOS upgrade, the ROM flash would render the system BIOS unusable. For example, if a power failure...
6 Boot Block Emergency Recovery Mode Boot Block Emergency Recovery Mode permits system recovery in the unlikely event of the ROM that contains code that checks for a valid system BIOS image when the system is turned on. ● If the system BIOS image is valid, the system starts ...for BIOS image files. The Boot Block is a flash-protected section of a ROM flash failure. If the system successfully reprograms the ROM, the system will beep 8 times. Turn the power on to occur during a BIOS upgrade, the ROM flash would render the system BIOS unusable. For example, if a power failure...
Quick Setup and Getting Started Guide - Enhanced for Accessibility
Page 17
If the system beeps, then the keyboard should be operating correctly. ● Check all cable connections for instructions. If the system...to see the following list of general suggestions before taking further action: ● Check that the computer and monitor are error codes that the monitor is turned on and the green monitor light is on. ● Check the power LED on the ... board or other option. ENWW Helpful Hints 9 Refer to Interpreting POST Diagnostic Front Panel LEDs and Audible Codes on the keyboard or pressing the power button. Helpful Hints If you diagnose the problem.
If the system beeps, then the keyboard should be operating correctly. ● Check all cable connections for instructions. If the system...to see the following list of general suggestions before taking further action: ● Check that the computer and monitor are error codes that the monitor is turned on and the green monitor light is on. ● Check the power LED on the ... board or other option. ENWW Helpful Hints 9 Refer to Interpreting POST Diagnostic Front Panel LEDs and Audible Codes on the keyboard or pressing the power button. Helpful Hints If you diagnose the problem.
Quick Setup and Getting Started Guide - Enhanced for Accessibility
Page 24
... not accept them. You can also use Computer Setup to reconfigure or disable devices to integrate the device with the computer system. Beeps and flashing LEDs are disabled in Computer Setup. or memory modules were installed in the upgrade 1. A plug and play board may... the issue, contact Customer Support. 16 Quick Setup & Getting Started ENWW Use Windows Device Manager to verify the proper installation. Observe the beeps and LED lights on . USB ports on the computer to resolve the resource conflict. Review the documentation that does not cause a resource ...
... not accept them. You can also use Computer Setup to reconfigure or disable devices to integrate the device with the computer system. Beeps and flashing LEDs are disabled in Computer Setup. or memory modules were installed in the upgrade 1. A plug and play board may... the issue, contact Customer Support. 16 Quick Setup & Getting Started ENWW Use Windows Device Manager to verify the proper installation. Observe the beeps and LED lights on . USB ports on the computer to resolve the resource conflict. Review the documentation that does not cause a resource ...
Quick Setup and Getting Started Guide - Enhanced for Accessibility
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... Started ENWW To reduce the risk of the computer and refer to cool before touching. Table 3 Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. Look for flashing LEDs on the system to determine the front panel LED... codes. None Computer on all diagnostic lights and audible codes are listed in the order in the following table to see flashing LEDs on a PS/2 keyboard, look...
... Started ENWW To reduce the risk of the computer and refer to cool before touching. Table 3 Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. Look for flashing LEDs on the system to determine the front panel LED... codes. None Computer on all diagnostic lights and audible codes are listed in the order in the following table to see flashing LEDs on a PS/2 keyboard, look...
Quick Setup and Getting Started Guide - Enhanced for Accessibility
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... If the system enters the POST, then power off and replace one at a time and repeat this procedure until problem is solved. Beeps stop after fifth iteration but is causing the problem by a two second pause. OR The heatsink/fan assembly is overloaded). If the processor.... 3. Check if a device is not spinning, then replace heatsink/fan assembly. Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Green Power LED flashes every two seconds. None Computer in , but LEDs continue until problem is solved.
... If the system enters the POST, then power off and replace one at a time and repeat this procedure until problem is solved. Beeps stop after fifth iteration but is causing the problem by a two second pause. OR The heatsink/fan assembly is overloaded). If the processor.... 3. Check if a device is not spinning, then replace heatsink/fan assembly. Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Green Power LED flashes every two seconds. None Computer in , but LEDs continue until problem is solved.
Quick Setup and Getting Started Guide - Enhanced for Accessibility
Page 28
...power cord before attempting to video). Beeps stop after fifth iteration but LEDs... second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem...pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Reflash the system ROM with HP memory. ...4. Replace the graphics card. 3. For systems with a graphics card: 1. Replace the system board. Beeps... Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes ...
...power cord before attempting to video). Beeps stop after fifth iteration but LEDs... second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem...pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Reflash the system ROM with HP memory. ...4. Replace the graphics card. 3. For systems with a graphics card: 1. Replace the system board. Beeps... Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes ...
Quick Setup and Getting Started Guide - Enhanced for Accessibility
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...Replace the system board. 3. System does not power on , then replace the power button harness. If the ENWW Basic Troubleshooting 21 Beeps stop after fifth iteration but is turned on and LEDs are properly connected to the appropriate voltage. Try the following: 1. but LEDs ... supply cables are not flashing. If the hard drive LED does not turn on 1. Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes 9 nine times, once every second, followed by a two second pause. Proper voltage ...
...Replace the system board. 3. System does not power on , then replace the power button harness. If the ENWW Basic Troubleshooting 21 Beeps stop after fifth iteration but is turned on and LEDs are properly connected to the appropriate voltage. Try the following: 1. but LEDs ... supply cables are not flashing. If the hard drive LED does not turn on 1. Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes 9 nine times, once every second, followed by a two second pause. Proper voltage ...
Quick Setup and Getting Started Guide - Enhanced for Accessibility
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Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action problem persists, replace the system board. 5. It the problem persists, replace the power supply. 22 Quick Setup & Getting Started ENWW If the 5V_aux light on the system board is not turned on, remove the expansion cards one at a time until the 5V_aux light on the system board turns on.
Table 3 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action problem persists, replace the system board. 5. It the problem persists, replace the power supply. 22 Quick Setup & Getting Started ENWW If the 5V_aux light on the system board is not turned on, remove the expansion cards one at a time until the 5V_aux light on the system board turns on.
HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
Page 37
... the ROM that contains code that checks for BIOS image files. Service Reference Guide, dc5750 437963-001 3-9 For more information on HPQFlash, visit http://www.hp.com/support/files and ... Note: The media must be incomplete. If the system successfully reprograms the ROM, the system will beep 8 times. To recover the system after it is not valid, a failsafe Boot Block BIOS provides... automatically power off the power. 2. Turn the power on the computer. Desktop Management 3.4.2 HPQFlash The HPQFlash utility is not corrupt, "Boot Block Emergency Recovery Mode" will blink red ...
... the ROM that contains code that checks for BIOS image files. Service Reference Guide, dc5750 437963-001 3-9 For more information on HPQFlash, visit http://www.hp.com/support/files and ... Note: The media must be incomplete. If the system successfully reprograms the ROM, the system will beep 8 times. To recover the system after it is not valid, a failsafe Boot Block BIOS provides... automatically power off the power. 2. Turn the power on the computer. Desktop Management 3.4.2 HPQFlash The HPQFlash utility is not corrupt, "Boot Block Emergency Recovery Mode" will blink red ...
HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
Page 162
...before proceeding. ✎ If you see if the processor fan spins. POST Diagnostic Front Panel LEDs and Audible Codes Activity Green Power LED On. Green Power LED flashes every two seconds. Ensure that the computer air vents ... system components to the system board. Beeps None None 2 Possible Cause Recommended Action Computer on all diagnostic lights and audible codes are listed in the order in Suspend to determine the front panel LED codes. Processor thermal protection activated: A fan... key or move the mouse to the processor. C-8 437963-001 Service Reference Guide, dc5750
...before proceeding. ✎ If you see if the processor fan spins. POST Diagnostic Front Panel LEDs and Audible Codes Activity Green Power LED On. Green Power LED flashes every two seconds. Ensure that the computer air vents ... system components to the system board. Beeps None None 2 Possible Cause Recommended Action Computer on all diagnostic lights and audible codes are listed in the order in Suspend to determine the front panel LED codes. Processor thermal protection activated: A fan... key or move the mouse to the processor. C-8 437963-001 Service Reference Guide, dc5750
HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
Page 163
...overloaded). Replace the device that the processor is causing the failure. Service Reference Guide, dc5750 437963-001 C-9 Pre-video memory error. Check to isolate the faulty module. 3....functioning properly. 3. Replace third-party memory with HP memory. 4. POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Red Power LED flashes three...solved. Red Power LED flashes five times, once every second, followed by a two second pause. Beeps 3 4 5 Possible Cause Processor not installed (not an indicator of bad processor). Red Power LED ...
...overloaded). Replace the device that the processor is causing the failure. Service Reference Guide, dc5750 437963-001 C-9 Pre-video memory error. Check to isolate the faulty module. 3....functioning properly. 3. Replace third-party memory with HP memory. 4. POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Red Power LED flashes three...solved. Red Power LED flashes five times, once every second, followed by a two second pause. Beeps 3 4 5 Possible Cause Processor not installed (not an indicator of bad processor). Red Power LED ...
HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
Page 164
...dc5750 System board failure (ROM detected failure prior to video). Replace the system board. Red Power LED flashes seven times, once every second, followed by a two second pause. Reflash the ROM with a graphics card: 1. POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes... but LEDs continue until problem is solved. See the "Boot Block Emergency Recovery Mode" section of the Desktop Management Guide on bad checksum. Beeps stop after fifth iteration but LEDs continue until problem is solved. Recommended Action For systems with the latest BIOS...
...dc5750 System board failure (ROM detected failure prior to video). Replace the system board. Red Power LED flashes seven times, once every second, followed by a two second pause. Reflash the ROM with a graphics card: 1. POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes... but LEDs continue until problem is solved. See the "Boot Block Emergency Recovery Mode" section of the Desktop Management Guide on bad checksum. Beeps stop after fifth iteration but LEDs continue until problem is solved. Recommended Action For systems with the latest BIOS...
HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
Page 165
... see if fault goes away. 2. Check each option card by a two second pause. Service Reference Guide, dc5750 437963-001 C-11 Once a bad card is solved. Beeps stop after fifth iteration but LEDs continue until problem is identified, remove and replace the bad option card. 3....POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Red Power LED flashes nine times, once every second, followed by a two second pause. Replace the system board. 1. Replace the processor. 3. Beeps stop after fifth iteration but LEDs continue until problem is...
... see if fault goes away. 2. Check each option card by a two second pause. Service Reference Guide, dc5750 437963-001 C-11 Once a bad card is solved. Beeps stop after fifth iteration but LEDs continue until problem is identified, remove and replace the bad option card. 3....POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Red Power LED flashes nine times, once every second, followed by a two second pause. Replace the system board. 1. Replace the processor. 3. Beeps stop after fifth iteration but LEDs continue until problem is...
HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
Page 166
Beeps None Possible Cause System unable to see if the 5 V_aux light on the system board.... If the 5 V_aux light on the system board is plugged into a working correctly. C-12 437963-001 Service Reference Guide, dc5750 Proper voltage setting depends on . If the hard drive LED does not turn on , then replace the power button harness. 5.... rear of the power supply, is turned on green then: 1. POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity System does not power on and LEDs are properly connected to the system board. 4. Check that both power...
Beeps None Possible Cause System unable to see if the 5 V_aux light on the system board.... If the 5 V_aux light on the system board is plugged into a working correctly. C-12 437963-001 Service Reference Guide, dc5750 Proper voltage setting depends on . If the hard drive LED does not turn on , then replace the power button harness. 5.... rear of the power supply, is turned on green then: 1. POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity System does not power on and LEDs are properly connected to the system board. 4. Check that both power...
Troubleshooting Guide - dc5750 Models
Page 25
...Setup utility and change boot sequence in the Storage > Boot Order list. port is enabled in HP Backup and Recovery Manager. See the Worldwide Limited Warranty for the blinking red and beep codes. To restart the computer, press the power button again. Run the Computer Setup utility and .... Computer will not boot from a hard drive, ensure it is not correct. Hard Drive's "Emulation Type" is blinking RED and if any beeps are heard. Hard drive is damaged. Cause Solution System files missing or not properly installed. 1. Install system files for four or more information. ...
...Setup utility and change boot sequence in the Storage > Boot Order list. port is enabled in HP Backup and Recovery Manager. See the Worldwide Limited Warranty for the blinking red and beep codes. To restart the computer, press the power button again. Run the Computer Setup utility and .... Computer will not boot from a hard drive, ensure it is not correct. Hard Drive's "Emulation Type" is blinking RED and if any beeps are heard. Hard drive is damaged. Cause Solution System files missing or not properly installed. 1. Install system files for four or more information. ...
Troubleshooting Guide - dc5750 Models
Page 37
... follow the instructions that all cables are disabled in the cable or connector are codes for the LED on the computer to integrate the device with the system to resolve the resource conflict. Observe the beeps and LED lights on . ENWW Solving Hardware Installation Problems 31 If you install .... You can also use the Add Hardware Wizard and follow the instructions for the board and choose a basic configuration that pins in Computer Setup. Beeps and flashing LEDs are not bent down . that does not cause a resource conflict. USB ports on the screen. If you install a plug...
... follow the instructions that all cables are disabled in the cable or connector are codes for the LED on the computer to integrate the device with the system to resolve the resource conflict. Observe the beeps and LED lights on . ENWW Solving Hardware Installation Problems 31 If you install .... You can also use the Add Hardware Wizard and follow the instructions for the board and choose a basic configuration that pins in Computer Setup. Beeps and flashing LEDs are not bent down . that does not cause a resource conflict. USB ports on the screen. If you install a plug...
Troubleshooting Guide - dc5750 Models
Page 71
... audio problems 26 hardware installation problems 31 helpful hints 8 B Backup and Recovery Manager 6 beep codes 56 boot problems 41 booting options Full Boot 49 Quick Boot 49 C CD-ROM or DVD problems 39 CMOS backing up 59 clearing and resetting ... 56 blinking PS/2 keyboard 56 M Media Card Reader problems 20 memory problems 36 monitor problems 22 mouse problems 29 N network problems 33 numeric error codes 50 E error codes 49, 56 messages 50 F flashing LEDs 56 front panel problems 43 G general problems 10 H hard drive problems 18 O optical drive problems 39 P password clearing...
... audio problems 26 hardware installation problems 31 helpful hints 8 B Backup and Recovery Manager 6 beep codes 56 boot problems 41 booting options Full Boot 49 Quick Boot 49 C CD-ROM or DVD problems 39 CMOS backing up 59 clearing and resetting ... 56 blinking PS/2 keyboard 56 M Media Card Reader problems 20 memory problems 36 monitor problems 22 mouse problems 29 N network problems 33 numeric error codes 50 E error codes 49, 56 messages 50 F flashing LEDs 56 front panel problems 43 G general problems 10 H hard drive problems 18 O optical drive problems 39 P password clearing...