Help MBP with flashing blue screen on start up!!!

hi, i have a macbook pro 2.4 with leopard on it, i was doing this little experiment with my mac mini which is G4 and leopard upgraded already. I was trying to set up the file sharing, screen sharing, and remote management with both of my MBP and mac mini G4. from the beginning everything seems fine and i only used the screen sharing on my mac mini (using mac mini to access MBP) after a while, i tried to quit the screen sharing and tried to restart my MBP as i feel its getting slow, after the restart thats when the problem occurred!!! it wont boot!!! after showing the apple log, it goes blue, then keeps flashing with blue and light blue screen and scrolling wheels! tried to do safe boot which is holding shift key, it just keeps the spinning wheel in the apple logo
so i ve tried to pop in my installation disc to do the disk utility, everything seems fine, during the process of verify permission, seen like 10 lines of saying group 0 should be 80 in library etc etc cant be sure, and the last line is ACL found, not expected in library, does ACL means Access Control List here? i know this is for networking terminology, but seems weird for the mac...
oh yeah forgot to mention that i tried to set up user account for the sharing system, like file sharing, only "Me" able to access with password on it, so in mac mini, using screen sharing, i input "Me" on my username and password to access screen sharing, everything works as expected except after the restart. i know my last option would be archive and install, but i would really like to know whats the main cause of this problem!! as i dont wanna repeat this again, and figure a solution for this. im not even sure if archive install will clean this mess up! luckily, thanks to time machines, my stuffs are back up, hopefully everything will be smooth by then, please help guys!!! thanks

Hold c, boot off the installer disk for your OS version and simply install OS X on top of the version your using.
Your files and programs should be fine.
http://kb.parallels.com/en/111541
http://kb.parallels.com/111570
Does the Time Machine back up Windows files/directories, also?
Windows is just a file in a virtual machine, so yes.
Bootcamped needs the free WinClone.

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