GLW_StartOpenGL() - could not load OpenGL subsystem

i have these problem with medal of honor allied assault how can i fix it


18190 files in pk3 files
execing default.cfg
execing menu.cfg
execing newconfig.cfg
Config: unnamedsoldier.cfg
couldn’t exec configs/unnamedsoldier.cfg
execing safemode.cfg
couldn’t exec localized.cfg
execing autoexec.cfg
Unknown command “fov”
couldn’t exec custom.cfg
…detecting CPU, found Intel Pentium III

------- Input Initialization -------
Initializing DirectInput…
Couldn’t set DI coop level
Falling back to Win32 mouse support…
------- Input Initialization Complete ------- 41
You are now setup for easy mode.
----- Client Initialization -----
Called FadeSound with: 0.000000
----- Initializing Renderer ----
----- R_Init -----
Initializing OpenGL subsystem
…initializing QGL
…calling LoadLibrary( ‘C:\WINDOWS\system32\opengl32.dll’ ): succeeded
…setting mode 3: 640 480 FS
…using colorsbits of 16
…calling CDS: ok
…registered window class
…created window@0,0 (640x480)
Initializing OpenGL driver
…getting DC: succeeded
…GLW_ChoosePFD( 16, 16, 0 )
…23 PFDs found
…GLW_ChoosePFD failed
…GLW_ChoosePFD( 16, 16, 0 )
…23 PFDs found
…GLW_ChoosePFD failed
…failed to find an appropriate PIXELFORMAT
…restoring display settings
…WARNING: could not set the given mode (3)
…shutting down QGL
…unloading OpenGL DLL
…assuming ‘3dfxvgl’ is a standalone driver
…initializing QGL
…calling LoadLibrary( ‘C:\WINDOWS\system32\3dfxvgl.dll’ ): failed
…shutting down QGL
GLW_StartOpenGL() - could not load OpenGL subsystem