Filter
Top Products
Table 4-3 Display problems (continued)
Problem Cause Solution
Power LED flashes red 6 times
(once every second), followed by a
2-second pause, and then the
computer beeps 6 times.
Pre-video graphics error. For systems with a graphics card:
1. Reseat the graphics card.
2. If the card requires external power, make sure the
power cable is properly connected.
3. Replace the graphics card.
4. Replace the system board.
For systems with no graphics card installed, the CPU may
have no integrated graphics capability.
Monitor does not function when
used with Energy Saver features.
Monitor without Energy Saver
capabilities is being used with
Energy Saver features
enabled.
Disable the 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.
Verify that the graphics cable is connected to the graphics
card and the monitor.
Blurry video or requested
resolution cannot be set.
If the graphics controller was
upgraded, the correct video
drivers might not be loaded.
Install the video drivers included in the upgrade kit, or
download and install the latest drivers for your graphics
card from
http://welcome.hp.com/country/us/en/
support.html.
Monitor cannot display
requested resolution.
Change the requested resolution.
The picture is broken up, rolls,
jitters, or flashes.
The monitor connections might
be faulty, or the monitor might
be incorrectly adjusted.
1. Be sure the monitor cable is securely connected to the
computer.
2. In a multiple CRT monitor system, ensure that the
monitors' electromagnetic fields are not interfering
with each other . Move them apart if necessary.
3. Move fluorescent lights or fans that are too close to
the CRT monitor.
Monitor must be degaussed. Degauss the monitor.
Vibrating or rattling noise coming
from inside a CRT monitor when
powered on.
Monitor degaussing coil has
been activated.
None. It is normal for the degaussing coil to be activated
when the monitor is powered on.
Clicking noise coming from inside
a CRT monitor.
Electronic relays have been
activated inside the monitor.
None. It is normal for some monitors to make a clicking
noise when turned on and off, when going in and out of
Standby mode, and when changing resolutions.
High pitched noise coming from
inside a flat-panel monitor.
Brightness and contrast
settings are too high.
Lower brightness and contrast settings.
130 Chapter 4 Diagnostics and troubleshooting