HP dx2290 - Microtower PC Service & Reference Manual page 91

Table D-6 Solving Display Problems (continued)
Blank screen (no video).
Cause
Monitor cable is plugged into the wrong connector.
Monitor settings in the computer are not compatible with the
monitor.
Monitor does not function properly when used with energy saver features.
Cause
Monitor without energy saver capabilities is being used with
energy saver features enabled.
Dim characters.
Cause
The brightness and contrast controls are not set properly.
Cables are not properly connected.
Blurry video or requested resolution cannot be set.
Cause
If the graphics controller was upgraded, the correct graphics
drivers may not be loaded.
Monitor is not capable of displaying requested resolution.
Graphics card is bad.
Solution
Ensure that the monitor is plugged into an active connector on
the rear of the computer. If another connector is available,
connect the monitor to that connector and reboot the system.
1. Using the keyboard arrow
Mode and press Enter.
2. In Windows Control Panel, double-click the Display icon
and select the Settings tab.
3. Use the sliding control to reset the resolution.
Solution
Disable monitor energy saver feature.
Solution
Adjust the monitor brightness and contrast controls.
Check that the graphics cable is securely connected to the
graphics card and the monitor.
Solution
Install the video drivers included in the upgrade kit.
Change requested resolution.
Replace the graphics card.
Solving Display Problems
keys, select Enable VGA
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