HP 8000f Maintenance and Service Guide: HP Compaq 8000f Elite Business PC Ultr - Page 118

Table E-6, No Connection, Check Signal Cable displays on screen.

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Table E-6 Solving Display Problems (continued) Blurry video or requested resolution cannot be set. Cause Solution If the graphics controller was upgraded, the correct graphics Install the video drivers included in the upgrade kit. drivers may not be loaded. 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 The monitor connections may be incomplete or the monitor may be incorrectly adjusted. Monitor needs to be degaussed. Solution 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. Degauss the monitor. Refer to the documentation that came with the monitor for instructions. Image is not centered. Cause Position may need adjustment. Solution Press the monitor's 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 Video resolution and refresh rate are set higher than what the monitor supports. Solution 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. 108 Appendix E Troubleshooting Without Diagnostics

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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 monitor's 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 E-6
Solving Display Problems (continued)
108
Appendix E
Troubleshooting Without Diagnostics