So uh, now it works. My screen went black and came back but I could only select 30hz. So I decided to reinstall everything nvidia, nvidia-dkms, nvidia-utils, lib32-nvidia-utils and opencl-nvidia.
After this magically Sims 1 and 2 work! I have tried to get old games to work since October, and I am sure I did this already before, but somehow it now works.
Thanks for everyones help!
Catgirls.