HP Workstation z400 - Page 81

Solving display problems
Table 11-5 Display problems
Problem Cause Solution
Blank screen (no video). The cable connections
are not correct.
Verify the cable connections from the monitor
to the workstation and to a working electrical
outlet.
The monitor is off. Turn the monitor on (LED is on). You might
need to refer to the monitor manual for an
explanation of LED signals.
Screen blanking utility
installed or energy saver
features enabled.
Press a key or the mouse button and, if set,
enter your password.
System ROM is bad;
system is running in
FailSafe Boot Block
mode (indicated by 8
beeps).
Reflash the ROM using a SoftPaq.
Fixed-sync monitor does
not sync at the resolution
specified.
Verify that the monitor can accept the same
horizontal scan rate as the resolution specified.
Computer is in Hibernate
mode.
Press the power button to resume from
Hibernate mode.
Workstation monitor
settings are not
compatible with the
monitor.
1. When you see Press F8 in the bottom-right
corner of the screen, restart the
workstation and press F8 during startup.
2. Using the keyboard arrow keys, select
Enable VGA Mode and then press Enter.
3. For Windows, double-click the Display
icon in the Control Panel and then select
the Settings tab.
4. Use the sliding control to reset the
resolution.
The display works properly
during the POST but goes
blank when the operating
system starts.
The display settings in
the operating system are
incompatible with your
graphics card and
monitor.
1. For Windows, 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 about changing display
settings.
Power LED flashes red 6
times (once every second),
followed by a 2–second
pause, and then the
workstation beeps 6 times.
Prevideo graphics error. For systems with a graphics card:
1. Reseat the graphics card.
2. Replace the graphics card.
3. Replace the system board.
ENWW Troubleshooting scenarios and solutions 73