I've noticed people experiencing this problem occuring a lot so I'm just gonna say this for reference.
DON'T SET KILLING FLOOR TO RUN WITH SOFTWARE DRIVERS.
It breaks killing floor. And then you have to delete your system folder to reset it (not the only method to fix it but the simplest to understand) It's in the list underneath Direct 3D 9 and Direct 3D. If you've made this mistake you know what i'm talking about.
Hope this saves people the trouble in the future.
DON'T SET KILLING FLOOR TO RUN WITH SOFTWARE DRIVERS.
It breaks killing floor. And then you have to delete your system folder to reset it (not the only method to fix it but the simplest to understand) It's in the list underneath Direct 3D 9 and Direct 3D. If you've made this mistake you know what i'm talking about.
Hope this saves people the trouble in the future.