Table 5-27Display Problems (continued)

Problem

Cause

Solution

Monitor does not function properly when used with energy saver features.

Monitor without energy

Disable monitor energy saver feature.

saver 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

Check that the graphics cable is securely connected

 

connected.

to the graphics card and the monitor.

 

 

 

Blurry video or requested

If the graphics controller was

Install the video drivers included in the upgrade kit.

resolution cannot be set.

upgraded, the correct video

 

 

drivers might not be loaded.

 

 

 

 

 

Monitor is not capable of

Change requested resolution.

 

displaying requested

 

 

resolution.

 

The picture is broken up, rolls, jitters, or flashes.

The monitor connections might be incomplete or the monitor might be incorrectly adjusted.

1.Be sure the monitor cable is securely connected to the workstation.

2.In a two-monitor system or if another monitor is in close proximity, be sure the monitors are not interfering with each other’s electromagnetic field by moving them apart.

3.Fluorescent lights or fans might be too close to the monitor.

Monitor must be degaussed. Degauss the monitor.

Vibrating or rattling noise

Monitor degaussing coil has

None. It is normal for the degaussing coil to be

coming from inside a CRT

been activated.

activated when the monitor is powered on.

monitor when powered on.

 

 

 

 

 

Clicking noise coming from

Electronic relays have been

None. It is normal for some monitors to make a

inside a CRT monitor.

activated inside the monitor.

clicking 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.

 

Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the screen. (Flat panel monitors using an analog VGA input connection only.)

Flat panel monitor’s internal digital conversion circuits might be unable to correctly interpret the output synchronization of the graphics card.

1.Select the monitor’s Auto-Adjustment option in the monitor’s on-screen display menu.

2.Go to the HP Support Web site and check for an updated display driver.

Certain typed symbols do not appear correct.

The font you are using does not support that particular symbol.

Use the Character Map to locate the and select the appropriate symbol. Click Start > All

Programs > Accessories > System Tools > Character Map. You can copy the symbol from the Character Map into a document.

150 System Diagnostics and Troubleshooting