HP ProDesk 400 G2.5 Maintenance And Service Manual page 107

Control panel message
515-Power Supply fan not detected
660-Display cache is detected unreliable
912-Computer Cover Has Been Removed Since
Last System Startup
917-Front Audio Not Connected
918-Front USB Not Connected
921-Device in PCI Express slot failed to
initialize
1151-Serial Port A Address Conflict Detected
1152-Serial Port B Address Conflict Detected
1155-Serial Port Address Conflict Detected
1720-SMART Hard Drive Detects Imminent
Failure
1796-SATA Cabling Error
1801-Microcode Patch Error
Description
Power supply fan is not connected or may have
malfunctioned.
Integrated graphics controller display cache is
not working properly and will be disabled.
Computer cover was removed since last system
startup.
Front audio harness has been detached or
unseated from motherboard.
Front USB harness has been detached or
unseated from motherboard.
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.
Both external and internal serial ports are
assigned to COM2.
Both external and internal serial ports are
assigned to same IRQ.
Hard drive is about to fail. (Some hard drives
have a hard drive firmware patch that will fix an
erroneous error message.)
One or more SATA devices are improperly
attached. For optimal performance, the SATA 0
and SATA 1 connectors must be used before
SATA 2 and SATA 3.
Processor is not supported by ROM BIOS.
Recommended action
1. Reseat power supply fan.
2. Reseat fan cable.
3. Replace power supply fan.
Replace system board if minimal graphics
degrading is an issue.
No action required.
Reconnect or replace front audio harness.
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. (See Appendix B,
security and resetting CMOS
on page 106.)
3. Reconfigure card resources and/or run
Computer Setup or Windows utilities.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Appendix B,
security and resetting CMOS
on page 106.)
3. Reconfigure card resources and/or run
Computer Setup or Windows utilities.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Appendix B,
security and resetting CMOS
on page 106.)
3. Reconfigure card resources and/or run
Computer Setup or Windows utilities.
1. Determine if hard drive is giving correct
error message. Run the Drive Protection
System test under using F2 Diagnostics
when booting the computer.
2. Apply hard drive firmware patch
if applicable. (Available at
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
Ensure SATA connectors are used in ascending
order. For one device, use SATA 0. For two
devices, use SATA 0 and SATA 1. For three
devices, use SATA 0, SATA 1, and SATA 2.
1. Upgrade BIOS to proper version.
2. Change the processor.
POST numeric codes and text messages
Password
Password
Password
99