I updated my G4 system from 10.1.2 to 10.3.9. It was working fine for a week or so but one day I turned it off and a log in to system screen showed up. My original desktop picture was gone and my harddrive alias/icon on my desktop was also gone. Neither my external harddrive nor my external dvd drive will mount and now my system is not able to connect to the internet. I am sure it is not my modem or the router because other people in my apartment are able to connect. Whenever I type in an address, the message displayed is "cannot find server." I tried to repair permissions on my internal harddrive but all the problems are still happening. Any suggestions?