HP COMPAQ DC5750 Troubleshooting Guide download pdf (Page 30)

Blurry video or requested resolution cannot be set.

Cause

Solution

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.

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

Cause

Solution

The monitor connections may be incomplete or the monitor

may be incorrectly adjusted.

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

computer.

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 may be too close to the monitor.

Monitor needs to be degaussed. Degauss the monitor. Refer to the documentation that came

with the monitor for instructions.

Image is not centered.

Cause

Solution

Position may need adjustment. Press the Menu button to access the OSD menu. Select

ImageControl/ Horizontal Position or Vertical Position to

adjust the horizontal or vertical position of the image.

“No Connection, Check Signal Cable” displays on screen.

Cause

Solution

Monitor video cable is disconnected. Connect the video cable between the monitor and computer.

CAUTION Ensure that the computer power is off

while connecting the video cable.

“Out of Range” displays on screen.

Cause

Solution

Video resolution and refresh rate are set higher than what the

monitor supports.

Restart the computer and enter Safe Mode. Change the

settings to a supported setting then restart the computer so that

the new settings take effect.

Table 2-6 Solving Display Problems (continued)

24 Chapter 2 Troubleshooting Without Diagnostics ENWW

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 71 72

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HP COMPAQ DC5750 Troubleshooting Guide Page 30