HP Pro 3400 A7L25UT#ABA, Pro 3515 E3S87UTABA, D3K31UTABA Table D-11Solving Network Problems

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	Solution
Bad option card.	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.

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 D-11Solving Network Problems

Wake-on-LAN feature is not functioning.

Cause	Solution
S5 Maximum Power Saving feature is enabled.	Disable the S5 Maximum Power Saving option in Computer
	Setup. Select Power > Hardware Power Management > S5
	Maximum Power Savings.
S5 Wake on LAN is disabled (some models).	Enable the S5 Wake on LAN option in Computer Setup.
	Select Advanced > Device Options > S5 Wake on LAN.
Wake-on-LAN is not enabled.	To enable Wake-on-LAN in Windows 7:
	1.	Select Start > Control Panel > Network and Sharing
		Center.
	2.	Under Tasks, select Manage network connections.
	3.	Click Local Area Connection.
	4.	Click the Properties button.
	5.	Click the Configure button.
	6.	Click the Power Management tab, then select Allow
		this device to wake the computer.
	To enable Wake-on-LAN in Windows 8:
	1.	From the Start screen, type c, and then select Control
		Panel from the list of applications.
	2.	Select Network and Sharing Center, and then click the
		Ethernet link next to the connection.
	3.	Click the Properties button.
	4.	Click the Configure button.
	5.	Click the Power Management tab, then enable the
		appropriate Wake-on LAN option.

Solving Network Problems 171