Compaq dc7900 Beeps - Convertible Minitower PC

Compaq dc7900 Beeps

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Quick Setup and Getting Started Guide


Page 16
... is turned on and the green monitor light is handled properly: ● Be in front of your system. ● Remove any key. If the system beeps, then the keyboard should be prepared to do the following list of the computer to see if it becomes necessary to call for technical assistance...
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Quick Setup and Getting Started Guide


Page 17
... other than the factory-installed operating system, check to be the default VGA source in again. If the system will be sure that you hear beeps, see flashing LEDs on the front of the computer, and press Enter. The computer will not function.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 49
... Bad option card Blinks red 10 times @ 1 Hz [1] None Replace option card NOTES: Beeps are repeated for 5 cycles, after which only blinking LED indication continues. [1] Repeated after 2 second pause. [2] Beeps are produced by BIOS Blinks red 7 times @ 1 Hz [1] 7 (pre-video) Replace... conditions include the following: 1. Hot power supply-Power supply increases speed of fan(s). 3. System Operational Status LED Indications System Status PowerLED Beeps [2] Action Required S0: System on (normal operation) Steady green None None S1: Suspend Blinks green @ .5 Hz None None S3:...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 65
... input uses a three-conductor (stereo) 1/8-inch mini-jack that accepts a stereo microphone. Front Panel Mic In Rear Panel Line In [1] 82801 ICH HD Audio Interface PC Beep HD Audio I/F Header P23 Mic Audio (L/R) Line Audio (L/R) Speaker Audio (mono) AD1884A HD Audio Codec Header Headphone P23 Audio (L/R) Line Audio Out (L/R) Audio Amp Header...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 85
...: [1] Will be accompanied by the same number of key system conditions listed as follows: Table 7-5. The front panel (bezel) power LED provides a visual indication of beeps, with 2-second pause between cycles. Check/replace system board. No light System dead. Blinks red 10 times @ 1 Hz [1] Bad option card. Press and hold power... then check voltage select switch setting or expansion cards. If no LED light then check power button/power supply cables to indicate system power status. Beeps stop after 5 cycles.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 94
...the GMCH accordingly. 4. Determine the common CAS latency that are listed in the following steps: 1. Blinks red 3 times @ 1 Hz 3 beeps Processor not installed. Blinks red 4 times @ 1 Hz None Power failure (power supply is corrected. 8-4 www.hp.com Technical Reference Guide...conditions are populated. 2. Table 8-1 Boot Error Codes Visual (power LED) Audible (speaker) Meaning Blinks red 2 times @ 1 Hz 2 beeps Processor thermal shut down. Check storage devices, expansion cards and/or system board (CPU power connector P3). On system with integrated graphics, check...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 99
... only to HP-branded models. Beep/Power LED Codes Beeps Power LED Probable Cause 2 beeps Blinks red 2 times @ 1... 6 beeps Blinks red 6 times @ 1 Hz Pre-video graphics error. Check power supply, CPU, system board. 10 beeps Blinks red... graphics card. 7 beeps Blinks red 7 times @ 1 Hz PCA failure. Reflash ROM using CD or replace system board. 9 beeps Blinks red 9 times...beeps Blinks red 4 times @ 1 Hz Power failure (power supply is corrected. Check air flow, fan operation, and CPU heatsink 3 beeps Blinks red 3 times @ 1 Hz Processor not installed. A.2 Beep/Power LED Codes ✎ Beep...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 46
...second. Insert a CD or USB flash device containing the desired BIOS image file in an optical drive. Remove the removable media used to a dx7xxx PC. 1. As soon as the computer is turned on to Single Computer CAUTION: A setup configuration is model-specific. If the portion of multiple computers..... If you are using the FAT12, FAT16, or FAT32 file system. 3. Replicating the Setup The following steps: 1. Simultaneously, the speaker will beep 8 times. NOTE: Both procedures require a diskette drive or a supported USB flash drive. Press Enter to enter Computer Setup.
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 239
... Reference Guide for instructions on installing a new battery, or contact an authorized dealer or reseller for an expansion card's option ROM. NOTE: The computer will beep once after a POST text message is used ). POST Numeric Codes and Text Messages This section covers those POST errors that may be used for booting...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 245
...to the system board. Recommended actions in , but is always applied to determine the front panel LED codes. Not all models. Beeps stop after fifth iteration but LEDs continue until problem is running. OR The heatsink/fan assembly is plugged onto the system board ...the front panel of bad processor). 1. Contact an authorized reseller or service provider. Table C-2 Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. Computer on. Red Power LED flashes three 3 times, once every second, followed by a ...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 246
...supply adapter. Replace the graphics card. 3. System board failure (ROM detected failure prior to ensure all devices are functioning properly. 3. Beeps stop after fifth iteration but LEDs continue until problem is solved. Replace the system board. Pre-video graphics error. Continue adding devices... 5 times, once every second, followed by The incorrect external removing ALL attached devices (such as power supply adapter is solved. Beeps stop after fifth iteration but LEDs continue until problem is hard, diskette, or optical drives, and being used on the USDT. ...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 247
...the bad option card. 3. Disable TXT in to the system board. Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes eight 8 times, once every second, followed by a two second pause. Replace the system board... the voltage selector, located on the rear of the Desktop Management Guide for less than 4 seconds. Invalid ROM based on this 2. Beeps stop after fifth iteration but LEDs continue until problem is set to boot. 1. Red Power LED flashes nine 9 times, once every ...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 248
It the problem persists, replace the power supply. 236 Appendix C POST Error Messages Check to see 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. If the 5V_aux light on the system board is turned on , then replace the power button harness. If the problem persists, replace the system board. 5. Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action 4. If it is turned on .
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 250
... for the latest online support information, software and drivers, proactive notification, and worldwide community of general suggestions before running the restore process. If the system beeps, then the keyboard should be prepared to do the following list of peers and HP experts. Helpful Hints If you diagnose the problem. Refer to...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 254
... in the application. 2. Contact an authorized reseller or service provider. Cause Solution System unable to improve performance by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but is running. 2. If the hard drive LED turns green, then: 1. Remove the expansion cards one at a time until the...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 255
... system board is off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but is not properly attached to the system board. 4. Solving Power Problems Common causes and solutions for power problems are...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 256
... Explore, and select a drive. Select Properties then select the Tools tab. Ensure that is causing the problem by a two second pause, and the computer beeps four times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Power failure (power supply is incorrectly inserted. Power on a drive. Replace the power supply...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 260
...1. Run the Computer Setup utility and select Storage > Boot Order and ensure the bootable hard drive's controller is selected for the blinking red and beep codes. is listed immediately under Storage > Device Configuration. Computer seems to start from a diskette that has been hidden in Run the Computer Setup ... device's details under the Hard Drive entry. Computer will not boot from the diskette drive. Boot order is blinking RED and if any beeps are heard. If this fails, press the power button for four or more seconds to determine possible causes for the device's SATA port ...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 261
... is not fully seated in the enclosure frame or the hard drive is not turned to the "ON" position. The removable hard drive enclosure is beeping and the green LED is properly seated in a computer with a FAT32 formatted card. Either format the media card in the digital camera or select FAT...
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Service Reference Guide: HP Compaq dc7900 Business PC


Page 263
... Media Card Reader Problems (continued) After inserting a media card in Boot Block Emergency Recovery Mode (indicated by the system. system is being driven by eight beeps). rate as the resolution chosen. If you will not sync at the Be sure that is corrupted; Turn on the monitor and check that is...

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We have the following 22 documents available for the Compaq dc7900:
  • Service Reference Guide: HP Compaq dc7900 Business PC
  • Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers
  • HP ProtectTools User Guide
  • Troubleshooting Guide
  • Hardware Reference Guide - dc7900 Series Convertible Minitower
  • Desktop Management Guide
  • vPro Setup and Configuration for the dc7900p Business PC with Intel vPro Processor Technology
  • Support Telephone Numbers
  • Safety and Regulatory Information Desktops, Thin Clients, and Personal Workstations
  • Building a Common Image - Developing a common software image for the HP dc7900, Elite 8000 and 6000 Pro desktop models
  • BIOS Flash Q&A White Paper
  • 12 More!
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