Troubleshooting Guide

A–8 www.hp.com Troubleshooting Guide
POST Error Messages
Red Power LED
flashes six times,
once every second,
followed by a
two-second pause.
The Power LED will
continue flashing
until the problem is
resolved.
6Pre-video
graphics error.
For systems with a graphics card:
1. Reseat the graphics card. Power on
the system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics,
replace the system board.
Red Power LED
flashes seven times,
once every second,
followed by a
two-second pause.
The Power LED will
continue flashing
until the problem is
resolved.
7 System board
failure (ROM
detected
failure prior to
video).
Replace the system board.
Red Power LED
flashes eight times,
once every second,
followed by a
two-second pause.
The Power LED will
continue flashing
until the problem is
resolved.
8Invalid ROM
based on bad
checksum.
1. Reflash the ROM using a ROMPaq
diskette. See the “ROM Flash”
section of the Desktop
Management Guide on the
Documentation CD.
2. Replace the system board.
Red Power LED
flashes nine times,
once every second,
followed by a
two-second pause.
The Power LED will
continue flashing
until the problem is
resolved.
9 or None,
depending
on the
issue
System powers
on but is
unable to
boot.
1. Check that the voltage selector,
located on the rear of the power
supply (some models), is set to the
appropriate voltage. Proper voltage
setting depends on your region.
2. Replace the system board.
3. Replace the processor.
Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity Beeps
Possible
Cause Recommended Action