Hello, Today Safari froze wilst i was watching a youtube video and i was unable to get a response from my mac and was forced too restart. This however led to a bigger problem and my mac has since been unable to boot up. After i turn my Powerbook on i will be taken to the white background with the grey apple logo and this is as far as i can get. The loading symbol will continually rotate and the screen will display the same imagery until i turn it off. I am complete stumped by this and have spent a wile trying to sort it out. I first off all booted up onto the OS X disc and verify the disk and the disk permissions. There was no problem with the disk, but there were a few with the permissions that needed repairing. This however did not change anything. I then decided to reset the PRAM and the NVRAM, but this did not help. I also tried a force restart several times - as i was unable to think off anything eles i was able to do. I am a competent mac user and have delt with several issues over the years, but am completely stumped by this. I have been forced to repartition my hard drive and install a NEW fresh instal of OS X in order to speak too you guys. I can confirm that i have had no problems booting into this partition. Can anyone help me fix my problem, as i have not really got the time to reinstall OS X and configure my system for at least 2-3 weeks due to work comitments. If anymore information is needed, please dont hesitate to ask? Thanks in advance Justin

safe mode? i understand your frustration, I thought of this a bit and the only time i've seen it happen is because of a major system font conflict. i doubt that's the cause because you weren't touching fonts when this happened. damn youtoob... blame them