Solving Display Problems - HP Compaq dc5750 MT Troubleshooting Manual

Solving Display Problems

If you encounter display problems, see the documentation that came with the monitor and to the common
causes and solutions listed in the following table.
Table 2-6 Solving Display Problems
Blank screen (no video).
Cause
Monitor is not turned on and the monitor light is not on.
Bad monitor.
The cable connections are not correct.
You may have a screen blanking utility installed or energy
saver features are enabled.
System ROM is corrupted; system is running in Boot Block
Emergency Recovery Mode (indicated by eight beeps).
You are using a fixed-sync monitor and it will not sync at the
resolution chosen.
Computer is in standby mode.
Monitor cable is plugged into the wrong connector.
Monitor settings in the computer are not compatible with the
monitor.
Cannot enable integrated graphics after installing a PCI Express graphics card.
Cause
On systems with ATI integrated graphics, the integrated
graphics can be enabled in Computer Setup only if an ATI PCI
Express graphics card is installed.
22 Chapter 2 Troubleshooting Without Diagnostics
Solution
Turn on the monitor and check that the monitor light is on.
Try a different monitor.
Check the cable connection 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. See the
"Boot Block Emergency Recovery Mode" section of the
Desktop Management Guide on the Documentation and
Diagnostics CD for more information.
Be sure that the monitor can accept the same horizontal scan
rate as the resolution chosen.
Press the power button to resume from standby mode.
CAUTION 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.
Ensure that the monitor is plugged into an active connector on
the rear of the computer. If another connector is available,
connect the monitor to that connector and reboot the system.
1. Restart the computer and press
you see "Press F8" in the bottom right corner of the
screen.
2. Using the keyboard arrow
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.
Solution
On systems with ATI integrated graphics, install an ATI PCI
Express graphics card and enable the integrated graphics in
Computer Setup.
F8 during startup when
keys, select Enable VGA
ENWW