What processor does your Ti have ? it should work fine with 10.3, so having those kind of video issues could a number of things. Also, the install you have for leopard10.5, you said it was 10.5.3 ? is this a true retail copy or an original install disk from another machine ? some of this will help info will help to understand why you are having problems. you could also reset the PMU, go here to see the instructions, and it might clear up the issues. http://support.apple.com/kb/HT1431 also reset the PRAM, holding down the option/cmd/P/R keys all at the same time when you restartkeep holding them, it should into a restart loopkeep holding and let it restart over and over, 4-6 times, let go and let it boot. see if this helps and send me the other info sorry you are having problems with this. Cheers! Fred -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://listserver.themacintoshguy.com/pipermail/titanium/attachments/20130716/fe9697f7/attachment.htm>