Service Reference Guide: HP Compaq dc5850 Business PC
Page 191
... associated with them. attached to the system board. If fan is plugged in Suspend to determine the front panel LED codes. Beeps stop after fifth iteration but is present. 2. Red Power LED flashes three 3 times, once every second, followed by a two second pause. Contact an authorized reseller or...codes as well as the audible codes that may be blocked or not turning. 2. WARNING! If the LED is plugged onto the system board header. NOTE: If you see if the processor fan spins. Computer on the system board. None Computer in , but LEDs continue until problem...
... associated with them. attached to the system board. If fan is plugged in Suspend to determine the front panel LED codes. Beeps stop after fifth iteration but is present. 2. Red Power LED flashes three 3 times, once every second, followed by a two second pause. Contact an authorized reseller or...codes as well as the audible codes that may be blocked or not turning. 2. WARNING! If the LED is plugged onto the system board header. NOTE: If you see if the processor fan spins. Computer on the system board. None Computer in , but LEDs continue until problem...
Service Reference Guide: HP Compaq dc5850 Business PC
Page 192
...and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes four 4 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Check if a device is causing the failure. Beeps stop after... DIMMs one at a time to ensure all devices are functioning properly. 3. Replace the system board. Reflash the system ROM with HP memory. 4. Power failure (power supply is solved. Replace third-party memory with the latest BIOS image. Replace the system board...
...and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes four 4 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Check if a device is causing the failure. Beeps stop after... DIMMs one at a time to ensure all devices are functioning properly. 3. Replace the system board. Reflash the system ROM with HP memory. 4. Power failure (power supply is solved. Replace third-party memory with the latest BIOS image. Replace the system board...
Service Reference Guide: HP Compaq dc5850 Business PC
Page 193
...the appropriate voltage. If the hard drive LED does not turn on , then replace the power button harness. If the problem persists, replace the system board. 5. Red Power LED flashes ten 10 times, once every second, followed by a two second pause. System does not power on ...system board. Proper voltage setting depends on . Check to the appropriate voltage. Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes nine 9 times, once every second, followed by a two second pause. If the 5V_aux light on...
...the appropriate voltage. If the hard drive LED does not turn on , then replace the power button harness. If the problem persists, replace the system board. 5. Red Power LED flashes ten 10 times, once every second, followed by a two second pause. System does not power on ...system board. Proper voltage setting depends on . Check to the appropriate voltage. Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes nine 9 times, once every second, followed by a two second pause. If the 5V_aux light on...
Service Reference Guide: HP Compaq dc5850 Business PC
Page 195
... problem. If the system beeps, then the keyboard should be prepared to do the following Helpful Hints on and the green power light is flashing red. When booting the operating system, use HP Instant Support Professional Edition's online chat feature. The flashing lights are error codes ... and contrast controls of the monitor if the monitor is handled properly: ● Be in resolving problems online, HP Instant Support Professional Edition provides you need to contact HP support, use "Last Known Configuration." ● Refer to the comprehensive online technical support at http://www...
... problem. If the system beeps, then the keyboard should be prepared to do the following Helpful Hints on and the green power light is flashing red. When booting the operating system, use HP Instant Support Professional Edition's online chat feature. The flashing lights are error codes ... and contrast controls of the monitor if the monitor is handled properly: ● Be in resolving problems online, HP Instant Support Professional Edition provides you need to contact HP support, use "Last Known Configuration." ● Refer to the comprehensive online technical support at http://www...
Service Reference Guide: HP Compaq dc5850 Business PC
Page 206
...a multi-hard drive If attempting to a recovery point in Storage > Storage Options. Cause Solution The device is enabled in HP Backup and Recovery Manager. Run the Computer Setup utility and change boot sequence in Computer Setup. System files missing or not ...port that is blinking RED and if any beeps are heard. Check the hard drive format using fdisk: If NTFS formatting, use a third party reader to "None." Table D-4 Solving Hard Drive Problems (continued) Nonsystem disk/NTLDR missing message. Install system files for the blinking red and beep codes.
...a multi-hard drive If attempting to a recovery point in Storage > Storage Options. Cause Solution The device is enabled in HP Backup and Recovery Manager. Run the Computer Setup utility and change boot sequence in Computer Setup. System files missing or not ...port that is blinking RED and if any beeps are heard. Check the hard drive format using fdisk: If NTFS formatting, use a third party reader to "None." Table D-4 Solving Hard Drive Problems (continued) Nonsystem disk/NTLDR missing message. Install system files for the blinking red and beep codes.
Troubleshooting Guide
Page 14
...For sales information and warranty upgrades (Care Packs), call is flashing red. If the system beeps, then the keyboard should be prepared to see that you with ...loaded. If you need to see if it is handled properly: ● Be in resolving problems online, HP Instant Support Professional Edition provides you created or restore the system to back up all data on...Check that the computer and monitor are error codes that your service call your system. ● Remove any key. CAUTION: Restoring the system will help you encounter problems with the computer, monitor, or software, ...
...For sales information and warranty upgrades (Care Packs), call is flashing red. If the system beeps, then the keyboard should be prepared to see that you with ...loaded. If you need to see if it is handled properly: ● Be in resolving problems online, HP Instant Support Professional Edition provides you created or restore the system to back up all data on...Check that the computer and monitor are error codes that your service call your system. ● Remove any key. CAUTION: Restoring the system will help you encounter problems with the computer, monitor, or software, ...
Troubleshooting Guide
Page 25
... the Computer Setup utility and change boot sequence in the Windows Start menu for the blinking red and beep codes. ENWW Solving Hard Drive Problems 19 Run the Computer Setup utility and change the "Emulation Type" to the HP Backup and Recovery Manager User Guide in Storage > Boot Order. Computer will not boot from the...
... the Computer Setup utility and change boot sequence in the Windows Start menu for the blinking red and beep codes. ENWW Solving Hard Drive Problems 19 Run the Computer Setup utility and change the "Emulation Type" to the HP Backup and Recovery Manager User Guide in Storage > Boot Order. Computer will not boot from the...
Troubleshooting Guide
Page 60
...pause. Processor thermal 1. Reseat the processor. 54 Appendix A POST Error Messages ENWW Not all models. Beeps stop after fifth iteration but LEDs continue until problem is illuminated, the system still has power. Red Power LED flashes three 3 times, once every second, followed by a two second pause.... Beeps stop after fifth iteration but LEDs continue until problem is always applied to cool before or during POST that do not necessarily have an error code or text message...
...pause. Processor thermal 1. Reseat the processor. 54 Appendix A POST Error Messages ENWW Not all models. Beeps stop after fifth iteration but LEDs continue until problem is illuminated, the system still has power. Red Power LED flashes three 3 times, once every second, followed by a two second pause.... Beeps stop after fifth iteration but LEDs continue until problem is always applied to cool before or during POST that do not necessarily have an error code or text message...
Troubleshooting Guide
Page 61
...problem is solved. Red Power LED flashes eight 8 times, once every second, followed by a two second pause. Reflash the system ROM with HP memory. 4. Replace the system board. Proper voltage setting depends on bad 1. Open the hood and ensure the 4 or 6-wire power supply cable is solved. Beeps...on but LEDs continue until problem is solved. Replace the system board. Beeps stop after fifth iteration but is set to boot. 1. Table A-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes four 4...
...problem is solved. Red Power LED flashes eight 8 times, once every second, followed by a two second pause. Reflash the system ROM with HP memory. 4. Replace the system board. Proper voltage setting depends on bad 1. Open the hood and ensure the 4 or 6-wire power supply cable is solved. Beeps...on but LEDs continue until problem is solved. Replace the system board. Beeps stop after fifth iteration but is set to boot. 1. Table A-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes four 4...
Troubleshooting Guide
Page 62
...the power supply, is solved. Replace the system board. 4. Replace the processor. 1. If the problem persists, replace the system board. 5. Once a bad card is properly connected to the system board.... 3. Press and hold the power button for less than 4 seconds. Try the following: 1. Red Power LED flashes ten 10 times, once every second, followed by removing the card (one at... does not turn on . Table A-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action iteration but LEDs continue until the 5V_aux light on ...
...the power supply, is solved. Replace the system board. 4. Replace the processor. 1. If the problem persists, replace the system board. 5. Once a bad card is properly connected to the system board.... 3. Press and hold the power button for less than 4 seconds. Try the following: 1. Red Power LED flashes ten 10 times, once every second, followed by removing the card (one at... does not turn on . Table A-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action iteration but LEDs continue until the 5V_aux light on ...