My existing network used to work, but now it doesn’t.
OCheck the existing network installation to verify that all cables are still attached and all link/activity lights on the other network devices read correctly.
OVerify that the network settings on all of the computers are correct.
My newly networked computer sees my network but can’t find the Internet.
OCheck the Internet settings on another computer in the network.
If your computer can’t access the Internet, it might be looking for the wrong IP address or trying to use the wrong Internet protocol. Although the IP address might have been correct on this computer previously, if you changed Internet service providers (ISP) or reconfigured your network, then all of the IP addresses in your network could have changed as well. See the documentation that you received from your ISP for the correct IP addresses and protocols.
OMake sure the computer has been correctly configured to work with your ISP’s connection settings. Compare the settings of a computer on the existing network with those of the new computer being added. Verify that both computers are attempting to connect to the Internet in the same way. For example, if your ISP uses a Dynamic IP (DHCP) connection, make sure all computers on your network are set to DHCP in the Network section of the Windows Control Panel. For more information, search for Network or DHCP in Windows Help.
File and Printer Sharing Problems
This section will help you solve common problems with sharing files and printers on your network.
To learn how to add or share files and printers over your network, see Windows Help.
I cannot access shared files over my network.
If you want to share files between computers on your network, all computers must belong to the same workgroup. Check the workgroup names on each computer by using the following instructions.
Windows XP:
1.Click Start, and then click Control Panel.
2.