Troubleshooting Guide

Troubleshooting Guide www.hp.com 2–21
Troubleshooting Without Diagnostics
Blank screen (no video).
(continued)
Monitor cable is
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.
✎
If the graphics card is a standard
PCI expansion card, you can
enable the integrated graphics in
Computer Setup. If a PCI-Express
graphics card is installed, the
integrated graphics can not be
enabled.
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.
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.
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.
Solving Display Problems (Continued)
Problem Cause Solution