Monitor won't sync to my computer

[m2mojo]

Hello, I'm on a MacBook laptop and I have a SyncMaster SA300 monitor, which was working fine together. All of a sudden, the monitor and computer won't sync up. Any ideas as to why?

 

[alvine]

check your display options? disconnect and connect?

 

[guavasauce]

ewwww macs.....i refuse!!!!