I finally solved the problem, but not in the way you proposed, Saltgrass. Thanks for your answear anyway. My solution was:
First I inserted Windows 7 boot disk, then whent to repair windows and launch CMD. I had to do it there, because if I would be in Windows, the OS would not let me replace Font folder. Then I look for Font on the install disk, and wrote copy Font C:\Windows\Font and replace the whole folder. And now it does not crash anymore.