HP COMPAQ DC5750 - Manual (Page 180)

D–14 437963-001 Service Reference Guide, dc5750
Troubleshooting Without Diagnostics
Blank screen (no video).
(continued)
Monitor settings in the
computer are not
compatible with the
monitor.
1. Restart the computer and press
F8 during startup 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 select the Settings tab.
4. Use the sliding control to reset
the resolution.
Cannot enable integrated
graphics after installing a
PCI Express graphics card.
On systems with Intel
integrated graphics, the
integrated graphics
cannot be enabled after
installing a PCI Express
graphics card.
The integrated graphics can be
enabled in Computer Setup if a
standard PCI graphics card is
installed.
Blank screen and the
power LED flashes Red five
times, once every second,
followed by a two second
pause, and the computer
beeps five times. Beeps
continue for five iterations
after which the LED flashes
will continue until the
problem is resolved.
Pre-video memory error. 1. Reseat DIMMs. Power on the
system.
2. Replace DIMMs one at a time to
isolate the faulty module.
3. Replace third-party memory
with HP memory.
4. Replace the system board.
Blank screen and the
power LED flashes Red six
times, once every second,
followed by a two second
pause, and the computer
beeps six times. Beeps
continue for five iterations
after which the LED flashes
will continue until the
problem is resolved.
Pre-video graphics
error.
For systems with a graphics card:
1. Reseat the graphics card. Power
on the system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated
graphics, replace the system board.
Solving Display Problems (Continued)
Problem Cause Solution