I have recently purchased the Radeon HD 5750 graphic card. After that when I insert it in my video card slot and start the computer at that time my monitor is not turning on. I am also not sure about CPU stars or not? Because first time it was showing the power light and after trying restart two to three times it is not showing the power light. Now please tell me what I should do to solve this problem. Please reply me as soon as possible. I am waiting for your reply.