Game crashed after changing a graphics setting. Wont start up now.

[jaysonbet]

[FONT=Times New Roman]I was playing the game and everything was working fine. I have an M17 running an ATI 3870 graphics card. I then went into the options menu to mess with the graphics settings. I changed a setting, I don’t remember what it was called but it had like three options about 3D something. I changed it from the setting it was on and then the game crashed. I can’t change it back because the game won’t start now.[/FONT]
[FONT=Times New Roman]I uninstalled the game and reinstalled it hopping it would reset the settings but it didn't... when I try to restart/load the game I get this error [/FONT]
[FONT=Times New Roman]
Build KillingFloor_Build_[2009-02-0. 9_10.82]

OS: Windows NT 6.0 (Build: 6001)
CPU: GenuineIntel PentiumPro-class processor @ 2527 MHz with 2047MB RAM
Video: No Video

General protection fault!

History: UWindowsViewport::TryRenderDevice <- UWindowsViewport::OpenWindow <- UGameEngine::Init <- InitEngine <- FMallocWindows::Free <- FMallocWindows::Free [/FONT]