HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 209

POST Error Messages POST Error Messages (Continued) Screen Message 918-Front USB Not Connected 921-Device in PCI Express slot failed to initialize. 1151-Serial Port A Address Conflict Detected Probable Cause Front USB harness has been detached or unseated from system board. There is an incompatibility/problem with this device and the system or PCI Express Link could not be retrained to an x1. Both external and internal serial ports are assigned to COM1. 1152-Serial Port B Address Conflict Detected Both external and internal serial ports are assigned to COM2. 1155-Serial Port Address Conflict Detected Both external and internal serial ports are assigned to same IRQ. 1201-System Audio Address Conflict Detected 1202-MIDI Port Address Conflict Detected 1203-Game Port Address Conflict Detected Device IRQ address conflicts with another device. Device IRQ address conflicts with another device. Device IRQ address conflicts with another device. Recommended Action Reconnect or replace front USB harness. Try rebooting the system. If the error reoccurs, the device may not work with this system. 1. Remove any serial port expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. 1. Remove any serial port expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. 1. Remove any serial port expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Service Reference Guide, dc7700 433612-001 C-5