HP EliteDesk 800 65W G4 Base Model Desktop Mini PC User Manual download pdf (Page 83)

Power LED ashes Red three times and then white two times.

Cause Solution

Memory is installed incorrectly or is bad. CAUTION: To avoid damage to the DIMMs or the system board,

you must unplug the computer power cord before attempting to

reseat, install, or remove a DIMM module.

1. Reseat DIMMs. Power on the system.

2. Replace DIMMs one at a time to isolate the faulty module.

NOTE: DIMM1 or XMM1 must always be installed. DIMM1

must be installed before DIMM2, and DIMM3 must be

installed before DIMM4

3. Replace third-party memory with HP memory.

4. 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.

Network driver does not detect network controller.

Cause Solution

Network controller is disabled. 1. Run Computer Setup and enable network controller.

2. Enable the network controller in the operating system using

Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Incorrect network driver. Check the network controller documentation for the correct driver

or obtain the latest driver from the manufacturer’s Web site.

Network status link light never ashes.

NOTE: The network status light is supposed to ash when there is network activity.

Cause Solution

No active network is detected. Check cabling and network equipment for proper connection.

Network controller is not set up properly. Check for the device status within Windows, such as Device

Manager for driver load and the Network Connections applet

within Windows for link status.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Network controller is disabled. 1. Run Computer Setup and enable network controller.

2. Enable the network controller in the operating system using

Device Manager.

Solving network problems 75

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HP EliteDesk 800 65W G4 Base Model Desktop Mini PC User Manual Page 83