HP dc73 Service Reference Guide - HP Compaq dc7800 Business PC - Page 220
Appendix C, POST Error Messages
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Table C-1 Numeric Codes and Text Messages (continued) Control panel message Description Recommended action 303-Keyboard Controller Error I/O board keyboard controller. 1. Reconnect keyboard with computer turned off. 2. Replace the system board. 304-Keyboard or System Unit Error Keyboard failure. 1. Reconnect the keyboard with computer turned off. 2. Ensure that none of the keys are depressed. 3. Replace the keyboard. 4. Replace the system board. 404-Parallel Port Address Conflict Detected Both external and internal ports are assigned 1. Remove any parallel port expansion to parallel port X. cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup. 410-Audio Interrupt Conflict IRQ address conflicts with another device. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. 411-Network Interface Card Interrupt Conflict IRQ address conflicts with another device. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. 501-Display Adapter Failure Graphics display controller. 1. Reseat the graphics card (if applicable). 2. Clear CMOS. 3. Verify monitor is attached and turned on. 4. Replace the graphics card (if possible). 510-Flash Screen Image Corrupted Flash Screen image has errors. Reflash the system ROM with the latest BIOS image. 511-CPU, CPUA, or CPUB Fan not Detected CPU fan is not connected or may have malfunctioned. 1. Reseat CPU fan. 2. Reseat fan cable. 3. Replace CPU fan. 512-Chassis, Rear Chassis, or Front Chassis Chassis, rear chassis, or front chassis fan is 1. Reseat chassis, rear chassis, or front Fan not Detected not connected or may have malfunctioned. chassis fan. 2. Reseat fan cable. 3. Replace chassis, rear chassis, or front chassis fan. 514-CPU or Chassis Fan not Detected CPU or chassis fan is not connected or may 1. Reseat CPU or chassis fan. have malfunctioned. 2. Reseat fan cable. 3. Replace CPU or chassis fan. 601-Diskette Controller Error Diskette controller circuitry or floppy drive circuitry incorrect. 1. Run Computer Setup. 2. Check and/or replace cables. 3. Clear CMOS. 208 Appendix C POST Error Messages