I used Apple Boot Camp on my Mac so I can have windows on my mac, the

[xbox 360 gamer]

installation went a bit weird..? So I went back on Mac OSX and deleted the windows partition using Boot Camp Assistant and the next time i turned my computer it came up with "no boot disc found". SO is my computer trying to start up on windows? How do I make it start up on mac? usually it would as i have used boot camp before.

 

[Another Me]

Put in your Mac OS install disc, hold the C key during boot up so that it starts from the disc, when the installer comes up go to Disk Utility and choose to Repair the hard drive, do Repair Permissions too.

Reboot and hold alt to bring up the list of OS's to boot from, it should only show one (Mac OS), so choose this. Once booted go into System Preferences and Startup Disk, set the startup disk to Mac OS.

If you still have problems, like it won't boot from Mac OS, you may have to do an Archive and Install from your Mac OS Install disc, this will keep your current user accounts and install a fresh copy of Mac OS.