Boot problem

Hi!
I wanted to boot from a cd yesterday and changed in the system panel so that my macbook would boot from cd and not hard drive. Now i cant get it to boot from the hard drive again, any ideas on what i can do? I can access all the files från a live cd.
Thanks for answer.

Welcome to the Forums!

Can you change the "system panel" back???

Try this: System Prefs>>> Start-up Disk... Make sure the OS X folder/drive is selected...

Thank you!

No, i cant boot in to os x, it just asks for a cd and do not boot from the hard drive.

Try starting up, while holding down the Option key and see if that works.