|It sometimes happens when the computer cannot find DNS it creates a bad IP number.|
Are you running 98/XP/or Vista ?
Go into Windows DOS prompt to view your connections:
For 98/ME type: winipcfg /all
for XP ipconfig /all
Then check it against what it supposed to be.
I would clear the present Network configuration by typing:
Reboot and then renew. ipconfig /renew
Windows sometimes confuses the IP when you have 2 PC connected and one day one boots up first, but the next day the other PC boots up first. Repair all too often will not repair the network like we think it should. The only way I found to fix a bug is to start all over (1st release as above said) then Uncheck TCP/IP in both computers, then do one computer at a time adding (check mark) TCP/IP obtain IP and DNS automatically. Connect your 2nd computer and boot it up. Then check mark TCP/IP (as above). Now they should find each other and assign Lan IP's in the order of boot.