Table 4-3Display problems (continued)

Problem

Cause

Solution

Power LED flashes red 6 times

Pre-video graphics error.

(once every second), followed by a

 

2-second pause, and then the

 

computer beeps 6 times.

 

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

Monitor without Energy Saver

Disable the monitor Energy Saver feature.

used with Energy Saver features.

capabilities is being used with

 

 

Energy Saver features

 

 

enabled.

 

 

 

 

Dim characters

The brightness and contrast

Adjust the monitor brightness and contrast controls.

 

controls are not set properly.

 

 

 

 

 

Cables are not properly

Verify that the graphics cable is connected to the graphics

 

connected.

card and the monitor.

 

 

 

Blurry video or requested

If the graphics controller was

Install the video drivers included in the upgrade kit, or

resolution cannot be set.

upgraded, the correct video

download and install the latest drivers for your graphics

 

drivers might not be loaded.

card from http://welcome.hp.com/country/us/en/

 

 

support.html.

 

 

 

 

Monitor cannot display

Change the requested resolution.

 

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

Monitor degaussing coil has

None. It is normal for the degaussing coil to be activated

from inside a CRT monitor when

been activated.

when the monitor is powered on.

powered on.

 

 

 

 

 

Clicking noise coming from inside

Electronic relays have been

None. It is normal for some monitors to make a clicking

a CRT monitor.

activated inside the monitor.

noise when turned on and off, when going in and out of

 

 

Standby mode, and when changing resolutions.

 

 

 

High pitched noise coming from

Brightness and contrast

Lower brightness and contrast settings.

inside a flat-panel monitor.

settings are too high.

 

 

 

 

130 Chapter 4 Diagnostics and troubleshooting

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