Solving Display Problems - HP xw6400 Service And Technical Reference Manual

Solving display problems

Table 5-7 Display problems
Problem
Blank screen (no video).
The display works properly during
the POST but goes blank when the
operating system starts.
Power LED flashes red 6 times,
once every second, followed by a
2–second pause, and the
workstation beeps 6 times.
Monitor does not function properly
when used with energy saver
features.
Dim character s.
ENWW
Cause
The cable connections are not
correct.
The monitor is off.
Screen blanking utility installed
or energy saver features
enabled.
System ROM is bad; system is
running in FailSafe Boot Block
mode (indicated by 8 beeps).
Fixed-sync monitor will not
sync at the resolution chosen.
Computer is in mode.
Monitor settings in the
workstation are not compatible
with the monitor.
The display settings in the
operating system are
incompatible with your
graphics card and monitor.
Pre-video graphics error.
Monitor without energy saver
capabilities is being used with
energy saver features
enabled.
The brightness and contrast
controls are not set properly.
Cables are not properly
connected.
Solution
Verify the cable connections from the monitor to the
workstation and to a working electrical outlet.
Switch the monitor to on (LED is on). You might need to
refer to the monitor manual for an explanation of the LED
signals.
Press any key or click the mouse button, and, if set, enter
your password.
Reflash the ROM using a ROMPaq diskette.
Be sure that the monitor can accept the same horizontal
scan rate as the resolution chosen.
Press the power button to resume from mode.
1. Restart the workstation and press
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 select the Settings tab.
4. Use the sliding control to reset the resolution.
1. Restart your workstation in VGA mode.
2. After the operating system starts, change the display
settings to match those supported by your graphics
card and monitor.
3. Refer to your operating system and graphics card
documentation for information on changing display
settings.
For systems with a graphics card:
1. Reseat the graphics card.
2. Replace the graphics card.
3. Replace the system board.
Disable monitor energy saver feature.
Adjust the monitor brightness and contrast controls.
Verify that the graphics cable is securely connected to the
graphics card and the monitor.
Troubleshooting scenarios and solutions
F8 during startup
117