Compaq dx7500 Service Reference Guide: HP Compaq dx7500 Business PC - Page 171

Solving Display Problems continued, Table C-6 - video controller

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Table C-6 Solving Display Problems (continued) Blank screen (no video). Cause Solution Monitor settings in the computer are not compatible with the 1. In Windows XP Control Panel, double-click the Display monitor. icon and select the Settings tab. In Windows Vista Control Panel, under Appearance and Personalization, select Adjust screen resolution. 2. Use the sliding control to reset the resolution. Monitor is configured to use an input that is not active. Use the monitor's on-screen menu controls to select the input that is being driven by the system. Refer to the monitor's user documentation for more information on the on-screen controls and settings. Cannot enable integrated graphics after installing a PCI Express graphics card. Cause Solution On systems with Intel integrated graphics, the integrated The integrated graphics can be enabled in Computer Setup if graphics cannot be enabled after installing a PCI Express x16. a PCI Express x1 graphics card is installed, but it cannot be enabled if there is a graphics card in the PCI Express x16 slot. Blank screen and the computer emits one short beep then one long beep followed by a three second pause. Cause Solution Pre-video memory error. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Blank screen and the computer emits two short beeps then one long beep followed by a three second pause. Cause Solution Pre-video graphics error. For systems with a graphics card: 1. Reseat the graphics card. Power on the system. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. Solving Display Problems 161

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Blank screen (no video).
Cause
Solution
Monitor settings in the computer are not compatible with the
monitor.
1.
In Windows XP Control Panel, double-click the
Display
icon and select the
Settings
tab.
In Windows Vista Control Panel, under
Appearance and
Personalization
, select
Adjust screen resolution
.
2.
Use the sliding control to reset the resolution.
Monitor is configured to use an input that is not active.
Use the monitor's on-screen menu controls to select the input
that is being driven by the system. Refer to the monitor's user
documentation for more information on the on-screen controls
and settings.
Cannot enable integrated graphics after installing a PCI Express graphics card.
Cause
Solution
On systems with Intel integrated graphics, the integrated
graphics cannot be enabled after installing a PCI Express x16.
The integrated graphics can be enabled in Computer Setup if
a PCI Express x1 graphics card is installed, but it cannot be
enabled if there is a graphics card in the PCI Express x16 slot.
Blank screen and the computer emits one short beep then one long beep followed by a three second pause.
Cause
Solution
Pre-video memory error.
1.
Reseat DIMMs. Power on the system.
2.
Replace DIMMs one at a time to isolate the faulty module.
3.
Replace third-party memory with HP memory.
4.
Replace the system board.
Blank screen and the computer emits two short beeps then one long beep followed by a three second pause.
Cause
Solution
Pre-video graphics error.
For systems with a graphics card:
1.
Reseat the graphics card. Power on the system.
2.
Replace the graphics card.
3.
Replace the system board.
For systems with integrated graphics, replace the system
board.
Table C-6
Solving Display Problems (continued)
Solving Display Problems
161