"No Bootable Disk"

So I have Leopard and ran into a little problem..

I partitioned a fraction of my drive to install Windows XP and although I thought the install didn't work well (seemed to have froze up) when I restarted the computer and booted that part of my drive it seemed to run fine.

Later, I decided that it was pointless to have the partition and removed it. Since then whenever I restart my computer it come sup "No Bootable Disk - blah blah blah press any key"

When I restart my computer and hold down the "option" key then I can see and load OSX (it's the only option) and it runs fine. My Issue is:

How to I fix it so i dont have to hold down the Option button? I want it to turn on and load like a normal healthy computer.

Please Help.

 

My Saviour!
Now if I could only understand why Firefox refuses to remember logins and passwords...