Solving Network Problems - HP ProOne 400 G1 Maintenance & Service Manual

Power LED flashes Red six times, once every second, followed by a two second pause, and the computer
beeps six times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Graphics card (some models) is not seated properly or is bad,
or system board is bad.
Power LED flashes Red ten times, once every second, followed by a two second pause, and the computer
beeps ten times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Bad option card.

Solving Network Problems

Some common causes and solutions for network problems are listed in the following table. These
guidelines do not discuss the process of debugging the network cabling.
Table 8-11
Wake-on-LAN feature is not functioning.
Cause
S5 Maximum Power Saving feature is enabled.
124 Chapter 8 Troubleshooting Without Diagnostics
Solving Network Problems
Solution
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.
Solution
1. Check each option card by removing the cards one at
time (if multiple cards), then power on the system to see if
fault goes away.
2.
Once bad card is identified, remove and replace bad
option card.
3.
Replace the system board.
Solution
Disable the S5 Maximum Power Saving option in Computer
Setup. Select Power > Hardware Power Management
> S5 Maximum Power Savings.