I've got an iBook G3 that I just bought Apple Refurb iBook and it works great. I just bought a new AirPort wireless card for it (not AirPort Extreme) and installed it and that worked great also. Just a few hours ago my computer froze while opening a text program and working with iTunes, and I had to Hard Reset the iBook. Upon restarting, not all of the programs booted up properly as some didn't have the little arrows below them though they were running. I restarted in the OS and the next time everything worked great except the computer did not recognize the airport card and the little button on the bar says "No AirPort Card Installed". I then shut down, took out the keyboard to see if anything was wrong, checked the connections, then started up, and it still didn't work. To get it into the shop requires about 4 days of paperwork and phone calls because Apple doesn't see this serial number as under Warranty becauase it is a Refurbed model. Does anyone have any ideas for how I can fix this problem without having to lose it to the shop? Any help is greatly appreciated, thanks!