Led Color Definitions; Post Error Messages - HP Z1 G2 Maintenance And Service Manual

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 Test (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 verifies the following items to confirm that the computer system is functioning properly:
Keyboard
●
● DIMMs
● CD or DVD drives
● All mass storage devices
CPUs
●
● Controllers
● Fans
Temperature sensors
●
● Cables (front/rear panels, audio, and USB ports)
The following table describes the POST error messages.
Screen message
101—Option ROM Checksum
Error
102—System Board Failure
66 Chapter 4 Diagnostics and troubleshooting
LED color
Blue System is on.
Blue System is in Standby.
System has experienced an error. (See
Red
on page
No light System is in Hibernate mode, or is off.
Probable cause
System ROM checksum.
DMA, timers, and so forth, might be set
improperly or might be defective.
System status
POST error messages
66.)
Recommended action
Verify that you have the latest ROM:
1. Flash the ROM, if needed.
2. If an expansion card was recently added,
remove it to find out if the problem remains.
3. Clear CMOS. If the message disappears, there
might be a problem with the expansion card.
4. Replace the system board.
1. Clear the CMOS.
2. Remove the expansion boards.
3. Replace the system board.