HP Dc7100 Troubleshooting Guide - Page 36

Enable VGA Mode, Enter, Display, Settings, Problem, Cause, Solution, Reseat DIMMs. Power on - video controller

Page 36 highlights

Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Blank screen (no video). (continued) Monitor cable is plugged into the wrong connector. Monitor settings in the computer are not compatible with the monitor. 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. 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. ✎ 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. 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. 2-20 www.hp.com Troubleshooting Guide

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2–20
www.hp.com
Troubleshooting Guide
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