Hi, First reset the computer. There is a button on the back next to the VGA connector--press that. If that doesn't work you may have a serious firmware problem but before deciding that's the problem I am including a Apple troubleshooting guide. Good luck Ralph
http://support.apple.com/kb/TS1367
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By the way your computer is listed as PowerBook g3 firewire. Ralph
Hi, First reset the computer. There is a button on the back next to the VGA connector--press that. If that doesn't work you may have a serious firmware problem but before deciding that's the problem I am including a Apple troubleshooting guide. Good luck Ralph
http://support.apple.com/kb/TS1367