Search the forums. There is tons of advice on this. If you want specific advice in this thread please supply the following information:
When posting a new question, please provide as much detail as possible describing your issue making sure to include the relevant hardware and software configuration.
- Issue Description: [Describe your issue in detail here]
- Hardware: [Describe the make and model of your: Graphics Card, CPU, Motherboard, RAM, PSU, Display(s), etc.]
- Software: [Describe version or release date of your: Operating System, Game/Application, Drivers, etc.]