Solving Display Problems - HP xw9400 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
OS starts.
116 Chapter 5 System diagnostics and troubleshooting
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 eight
blinks/beeps).
Fixed-sync monitor will not
sync at the resolution chosen.
Computer is in Standby mode
and the system LED is flashing
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.
Solution
Check 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 or a CD.
Be sure that the monitor can accept the same horizontal
scan rate as the resolution chosen.
Press the power button to resume from mode.
CAUTION When attempting to resume from
Standby mode, do not hold down the power button
for more than four seconds. Otherwise, the
workstation will shut down and you will lose your
data.
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 click the Settings tab.
4. Use the sliding control to reset the resolution.
5. Refer to your operating system and graphics card
documentation for information on changing display
settings.
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 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.
F8 during startup
F8 during startup
ENWW