G3 iBook running 10.4.11. Installed latest version. Ran program. Restarted. Airport no longer recognized wireless signal from Westell router on Verizon DSL."Airport is on ,but not connected to any network". Tried connecting directly with ethernet cable. Got "Ethernet cable is not connected". Ran uninstall. Rebooted. Got black and white window-among other things said fsck not done. Typed exit. Same result - no internet. Tried archive and reinstall 10.4.3 from disk -no help.
Any ideas? please keep it simple not too tekkie.
Much obliged for any help-I run a business on this computer and I'm stuck.