You realize that a report like this is not of much use. The error code is generic (use Google) and is usually down to a change on your system.
If C2 was previously working fine, then what has changed since?
Have you updated Windows? GPU Driver?
Have you tried re-installing C2?
You will need to provide considerably more information than you have. C2 works flawlessly for hundreds of thousands of people, so it's unlikely to be a fault with C2.