Troubleshooting Guide

12 www.hp.com Troubleshooting Guide
Troubleshooting
Green Power LED
flashes six times, once
every second, followed
by a two second
pause.
Pre-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.
Green Power LED
flashes eight times,
once every second,
followed by a two
second pause.
Invalid ROM based on
bad checksum.
1. Reflash the system ROM with the
latest BIOS image.
2. Replace the system board.
Diagnostic Front Panel LEDs (Continued)
Activity Possible Cause Recommended Action