Solving Display Problems - HP Compaq dc5700 MT Reference Manual

Solving Display Problems

Solving Display Problems
Problem
Blank screen (no video).
Service Reference Guide, dc5700
Cause
Monitor is not turned on
and monitor light is not
on.
Bad monitor.
The cable connections
are not correct.
Screen blanking utility
installed or energy
saver features enabled.
System ROM is
corrupted; system is
running in Boot Block
Emergency Recovery
Mode (indicated by
eight red blinks from the
power LED and eight
simultaneous beeps).
Fixed-sync monitor will
not sync at the
resolution chosen.
Computer is in
standby mode.
Monitor cable plugged
into the wrong
connector.
437804-001
Troubleshooting Without Diagnostics
Solution
Turn on the monitor and check that
the monitor light is on.
Try a different monitor.
Check the cable connections from
the monitor to the computer and to
the electrical outlet.
Press any key or click the mouse
button and, if set, type your
password.
Reflash the system ROM with the
latest BIOS image.
Ensure that the monitor can accept
the same horizontal scan rate as the
resolution chosen.
Press the power button to resume
from standby mode.
When attempting to resume
Ä
from standby mode, do
not hold down the power
button for more than four
seconds. Otherwise, the
computer will shut down
and you will lose any
unsaved data.
If the computer system has both
an integrated graphics connector
and an add-in graphics card
connector, plug the monitor cable
into the graphics card connector on
the back of the computer.
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