Used latest Knoppix, now boot problems with Windows Vista

Hi!

I downloaded the latest Knoppix and burned it to a CD. After that, i booted from the CD and everything works fine.

But now i have a problem. When i shutdown Knoppix, put out the CD and want to start my computer as before Knoppix with Windows Vista, the system does not boot anymore.

It says there is no boot record or something like that :-( Even the Windows Recovery does not work :-(

Hope you can help me! Did Knoppix changed something in my boot records?

Thanks!