Problem booting fedora 18 by nvidia card ?

Hello,

Installing Fedora 18 no problems. After booting the system hangs up.
Once again booting with removing the quiet and rgcb parameters foor more information. It stops just a fraction of a second wit a list of output. Then again it hangs up or freezes with a black screen
Runnig with parameter single furnishes no more information.

This behaviour is probably caused by the NVIDIA card GeForce GTX550Ti.

On the same system Windows 7 runs correctly.
Has anyone an idea what I can do solving this problem.

Thanks
rvenk