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LED color definitions
The following table describes what each LED light on the computer front panel signifies.
LED state
Solid
Flashing
Solid or flashing
None
POST error messages
The Power-On Self Text (POST) is a series of diagnostic tests that runs automatically when the computer is
turned on.
Audible and visual messages occur before the operating system starts if the POST encounters a problem.
POST checks the following items to make sure that the computer system is functioning properly:
●
Keyboard
●
DIMMs
●
Diskette drives
●
All mass storage devices
●
CPUs
●
Controllers
●
Fans
●
Temperature sensors
●
Cables (front/rear panels, audio, and USB ports)
The table shown next describes the POST error messages.
Screen message
102—System Board Failure
110—Out of memory space for
option ROMs
161—Real-Time Clock Power
Loss
162—Systems Options Error
68
Chapter 4 Diagnostics and troubleshooting
LED color
System status
Blue
System is on.
Blue
System is in Standby.
Red
System has experienced an error. (See
on page
68.)
No light
System is in Hibernate, or is off.
Probable cause
Option ROM for a device could not run
because of memory constraints.
POST error messages
Recommended action
Potential system board problem; contact HP Support.
Run Computer Setup (f10) Utility to disable unneeded
option ROMs, and to enable ACPI/USB Buffers at Top of
Memory.
1.
Run Computer Setup (f10) Utility and set default
settings.
2.
Replace the CMOS battery.
3.
Replace the system board.
1.
Run Computer Setup (f10) Utility and set default
settings.
2.
Replace the CMOS battery.
3.
Replace the system board.
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Table of Contents
Troubleshooting
