video card error off Crossfire

What is the actual error message you receive?
Have you been running crossfire ok before you received this error?
What version of windows do you use?

This isn't necessarily anything to do with the graphics card. The error has also been reported by many other users.

As usual, the things I would suggest first:

IMPORTANT: DO THESE IN ORDER.

1) Uninstall Crossfire game properly via Control Panel.
2) Delete the Crossfire folder in case corrupt files are left behind after uninstall.
3) Restart the computer.
4) Turn off your Anti-Virus & Malware detection programs. (EG: Spybot Tea Timer can block files being installed)
5) Reinstall the game.
6) With Anti-Virus still turned off - Run the game.
7) If it works OK turn Anti-Virus back on and try game again.

Fullscreen errors

Crossfire when I start I can not start in full screen, it stays in the upper left corner, put my book, and I click on options, until then well, I click on video and full screen option is checked, I have tried several methods to solve it and no good is no longer what to do. Would you be so kind to help me?, Thanks.