HP Compaq dc7700 DT, Справочное руководство

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Service Reference Guide, dc7700 433612-001 D–13
Troubleshooting Without Diagnostics
Solving Display Problems
Solving Display Problems
Problem Cause Solution
Blank screen (no video). Monitor is not turned on
and monitor light is not
on.
Turn on the monitor and check that
the monitor light is on.
Bad monitor. Try a different monitor.
The cable connections
are not correct.
Check the cable connections from
the monitor to the computer and to
the electrical outlet.
Screen blanking utility
installed or energy
saver features enabled.
Press any key or click the mouse
button and, if set, type your
password.
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).
Reflash the system ROM with the
latest BIOS image.
Fixed-sync monitor will
not sync at the
resolution chosen.
Ensure that the monitor can accept
the same horizontal scan rate as the
resolution chosen.
Computer is in
standby mode.
Press the power button to resume
from standby mode.
Ä
When attempting to resume
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.
Monitor cable plugged
into the wrong
connector.
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.