3Com Cable Modem External Getting Started Manual page 37

Troubleshooting the Ethernet Installation
cables so that the cable modem is connected directly to
the cable wall jack. Then try reconnecting to your cable
service provider.
Check for a resource conflict. To do this, right-click the
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My Computer icon on the Windows desktop. Then click
Properties. Click the Device Manager tab and look for a
yellow exclamation point or red X over the NIC in the
Network adapters field. If you see either, you have an
IRQ conflict. Refer to the manufacturer's documentation
that came with your network interface card.
Make sure that TCP/IP is the default protocol in use by
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your computer.
Release and renew the computer's IP address.
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To release and renew the IP address for the
Windows 95/98 operating system:
a Click Windows Start and click Run.
b Type in the Open field and click OK. The IP
winipcfg
Configuration screen appears.
c In the Ethernet Adapter Information group area, click
the drop down arrow and select the Ethernet adapter.
d Click Release. The IP address changes to 0.0.0.0.
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