HP Xw9400 HP xw9400 Workstation - Service and Technical Reference Guide - Page 156

Problem, Cause, Solution, Press F8, Enable VGA Mode, Display, Settings, In Windows Control Panel

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Table 6-7 Display problems (continued) Problem Cause Solution The display works properly during the POST but goes blank when the OS starts. The display settings in 1. Restart the workstation and press F8 the operating system are during startup when you see Press F8 in incompatible with your the bottom-right corner of the screen. graphics card and monitor. 2. Using the keyboard arrow keys, select Enable VGA Mode and press Enter. 3. In Windows Control Panel, double-click the Display icon and click the Settings tab. 4. Use the available functions to set the display to the proper values. 5. Refer to your operating system and graphics card documentation for information on changing display settings. Power LED flashes red six times, once every second, followed by a two second pause, and the workstation beeps six times. Pre-video graphics error. CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 1. Ensure that the auxiliary power cable (if applicable) is securely connected. 2. Reseat the graphics card. 3. Replace the graphics card. 4. Replace the system board. Monitor does not function properly when used with energy saver features. Monitor without energy saver capabilities is being used with energy saver features enabled. Disable monitor energy saver feature. Characters are dim. The brightness and Adjust the monitor brightness and contrast contrast controls are not controls. set properly. Cables are not properly Verify that the graphics cable is securely connected. connected to the graphics card and the monitor. Video is blurry or requested If the graphics controller Install the video drivers included in the upgrade resolution cannot be set. was upgraded, the kit. correct video drivers might not be loaded. Monitor is not capable of Change requested resolution. displaying requested resolution. 146 Chapter 6 System diagnostics and troubleshooting ENWW

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Problem
Cause
Solution
The display works properly
during the POST but goes
blank when the OS starts.
The display settings in
the operating system are
incompatible with your
graphics card and
monitor.
1.
Restart the workstation and press
F8
during startup when you see
Press F8
in
the bottom-right corner of the screen.
2.
Using the keyboard arrow keys, select
Enable VGA Mode
and press
Enter.
3.
In Windows Control Panel, double-click
the
Display
icon and click the
Settings
tab.
4.
Use the available functions to set the
display to the proper values.
5.
Refer to your operating system and
graphics card documentation for
information on changing display settings.
Power LED flashes red six
times, once every second,
followed by a two second
pause, and the workstation
beeps six times.
Pre-video graphics
error.
CAUTION:
Disconnect AC power from the
workstation before reseating or replacing
components because there is power to the
system board even when the workstation is
powered down.
1.
Ensure that the auxiliary power cable (if
applicable) is securely connected.
2.
Reseat the graphics card.
3.
Replace the graphics card.
4.
Replace the system board.
Monitor does not function
properly when used with
energy saver features.
Monitor without energy
saver capabilities is
being used with energy
saver features enabled.
Disable monitor energy saver feature.
Characters are dim.
The brightness and
contrast controls are not
set properly.
Adjust the monitor brightness and contrast
controls.
Cables are not properly
connected.
Verify that the graphics cable is securely
connected to the graphics card and the
monitor.
Video is blurry or requested
resolution cannot be set.
If the graphics controller
was upgraded, the
correct video drivers
might not be loaded.
Install the video drivers included in the upgrade
kit.
Monitor is not capable of
displaying requested
resolution.
Change requested resolution.
Table 6-7
Display problems (continued)
146
Chapter 6
System diagnostics and troubleshooting
ENWW