HP Dx5150 - Compaq Business Desktop Troubleshooting Manual page 36

Troubleshooting Without Diagnostics
Solving Display Problems (Continued)
Problem
Blank screen (no video).
(continued)
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. The beeps
will repeat five times, but
the Power LED will continue
flashing until the problem is
resolved.
2–20
Cause
Monitor cable is
plugged into the wrong
connector.
Monitor settings in the
computer are not
compatible with the
monitor.
Pre-video memory error.
www.hp.com
Solution
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.
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.
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.
Troubleshooting Guide