Having big problems with cgminer 3.1.0 on windows 7 64 bit.

Using HIS HD 7970 x2 with catalyst driver 13.1

Direct 3D 9.14.10.0945
OpenGL 6.14.10.12002

I tried to setup cgminer 3.1.0 with the simpliest settings

cgminer.exe -o http://pool:port -u username -p password -scrypt


Cgminer directly crashes with the windows screen, that the programm is not working any more.

I have absolutely no idea what i can do :/

The HIS control center is installed too, should i deinstall?

I recently changed from nvidia to Ati card.