Always start with a barebone cgminer.conf and then add parameters gradually. There is always a chance of a missing comma or misplaced quotes , which will lead to a red screen. For example I see this : "gpu-vddc" : @1.140@. The "@" is an invalid symbol there, start by removing the parameter entirely and then play with the value (in double quotes) after you managed to start cgminer for the first time.