I am using computer in which I am having Asrock P43DE3motherboard with Intel duo core E6620 and 4GB RAM and I have purchased the Msi R6870 hawk twin 1gb graphic card. When I connect the graphic card and after that when i turned on computer at that time there is no signal in my monitor. I donít know whether it is motherboard issue or graphic card issue. Please give me some solution to solve this problem. Any help will be appreciated.