HP Dc7100 Troubleshooting Guide - Page 47

Power LED flashes Red five - video card

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Troubleshooting Without Diagnostics Solving Hardware Installation Problems (Continued) Problem Cause Solution Computer will not start. Wrong memory modules were used in the upgrade or memory modules were installed in the wrong location. 1. Review the documentation that came with the system to determine if you are using the correct memory modules and to verify the proper installation. 2. Observe the beeps and LED lights on the front of the computer. See Appendix A, "POST Error Messages" to determine possible causes. 3. If you still cannot resolve the issue, contact Customer Support. Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. Memory is installed incorrectly or is bad. 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. Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. Video card is not seated properly or is bad, or system board is bad. 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. Troubleshooting Guide www.hp.com 2-31

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Troubleshooting Guide
www.hp.com
2–31
Troubleshooting Without Diagnostics
Computer will not start.
Wrong memory
modules were used in
the upgrade or memory
modules were installed
in the wrong location.
1. Review the documentation that
came with the system to
determine if you are using the
correct memory modules and to
verify the proper installation.
2. Observe the beeps and LED
lights on the front of the
computer. See
Appendix A,
“POST Error Messages”
to
determine possible causes.
3. If you still cannot resolve the
issue, contact Customer
Support.
Power LED flashes Red five
times, once every second,
followed by a two second
pause, and the computer
beeps five times.
Memory is installed
incorrectly or is bad.
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.
Power LED flashes Red six
times, once every second,
followed by a two second
pause, and the computer
beeps six times.
Video card is not seated
properly or is bad, or
system board is bad.
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 Hardware Installation Problems
(Continued)
Problem
Cause
Solution