Step 1
Update your Graphics Driver to the latest available.
ATI Users go here: www.ati.com
nVIDIA Users go here: www.nVIDIA.com
Note: Do not just install the new over the old Driver! Go to your
Computer Control Panel and uninstall the old Driver first, reboot your
Computer and install the new Driver - reboot again when the Driver ask
to!
You can also go to www.tweaksrus.com to find one too...
Step 2
Go to your "C:\windows\system32\" folder and search for the file
"atioglxx.dll" if you are ATI User
"nvoglnt.dll" if you are nVidia User
"opengl32.dll" is the Default OpenGL Driver if you don't use ATI or nVidia
rightclick the File and click "copy".
If you cant find you system32 folder - like me - up at the top that
search bar is there... manually type out C:\windows\system32 and it
will send you to the folder.
Step 3
Go to the folder "gldrv" in your Counter-Strike folder. Usually located
at "Steam\SteamApps\YourAccountName\counter-strike\gldrv".
Inside this folder are 2 files. Rename the "3dfxgl.dll" to "3dnwrk" Now
press CTRL + V or do a rightclick and paste. Now you should see the
file we just copied from the "system32" folder.
Note: If the file is not there right now, slap yourself at the forehead and return to Step 2! ^^
EDIT: On nonsteam the directory is Valve > gldrv
Step 4
Open the file "drvmap.txt" with a Editor (Notepad or whatever), but do not use MS-Word!
Delete everything inside this file! Now write the new Line:
"gldrv/nvoglnt.dll OpenGL Driver" (without the " ") if you are nVidia User
"gldrv/atioglxx.dll OpenGL Driver" (without the " ") if you are ATI User
"gldrv/opengl32.dll OpenGL Driver" (without the " ") if you use Default OpenGL
Save and close this file.
Step 5
Restart Steam, Start Counter-Strike and go straight to "Options". Go to
the Video Tab and choose OpenGL (left top "Renderer"), click apply and
ok.