Troubleshooting Guide

2–20 www.hp.com Troubleshooting Guide
Troubleshooting Without Diagnostics
Blank screen and the
power LED flashes Red six
times, once every second,
followed by a two second
pause, and the computer
beeps six times. (Beeps
stop after fifth iteration but
LEDs continue flashing.)
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.
Blank screen and the
power LED flashes Red
seven times, once every
second, followed by a two
second pause, and the
computer beeps seven
times. (Beeps stop after fifth
iteration but LEDs continue
flashing.)
System board failure
(ROM detected failure
prior to video).
Replace the system board.
Monitor does not function
properly when used with
energy saver features.
Monitor without energy
saver capabilities is
being used with energy
saver features enabled.
Disable monitor energy saver
feature.
Dim characters. The brightness and
contrast controls are not
set properly.
Adjust the monitor brightness and
contrast controls.
Cables are not properly
connected.
Check that the graphics cable is
securely connected to the graphics
card and the monitor.
Blurry video or requested
resolution cannot be set.
If the graphics controller
was upgraded, the
correct graphics drivers
may not be loaded.
Install the video drivers included in
the upgrade kit.
Monitor is not capable
of displaying requested
resolution.
Change requested resolution.
Graphics card is bad. Replace the graphics card.
Solving Display Problems (Continued)
Problem Cause Solution