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A network can be simple to install and maintain. However, occasionally
something might go wrong. The best approach to troubleshooting network
problems is to start at the very simplest level and work your way up.
Verify Each Computer's Identification
If more than one computer on your network has the same "Computer Name",
communications may be negatively affected. Also, each computer must have
the same "Workgroup" name to communicate properly. Use the steps in
Networking Basics to ensure that each computer on your network has a
unique "Computer Name" and an identical "Workgroup".
Verify Network Adapter Installation
If your Network Adapters were not properly installed, including the Network
System Software or device drivers, your network will not function properly.
Use these steps to verify that your Network Adapters are properly installed,
see Figure 35:
JJJ.
Double-click the "System" icon in the Control Panel.
KKK. Click the "Device manager" tab on top of the "System Properties"
dialog box.
LLL. Double-click "Network adapters" if you do not see any items
branching out. You should see "D-Link DHN-120 10Mb Home
Phoneline USB Adapter" branching out after double-clicking
"Network adapters."
MMM. If you do not see any items branching out after double-clicking
"Network adapters," your Network Adapter has not been properly
installed. Start at the beginning of the guide and follow all the
steps for this computer.
NNN. If you see any kind of symbol such as a yellow exclamation point
or red "X" over the icon adjacent to "D-Link DHN-120 10Mb
Home Phoneline USB Adapter", your adapter is not installed
properly or may have a problem. Double-click "D-Link DHN-120
Chapter 5 Troubleshooting
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