My friends R9 280x has fans spinning but not picture on monitor. he says the fans spin on then spin off and repeats and he says he doesn't see anything on the monitor. is his card faulty? it worked earlier but when he uninstalled his motherboard to put on the Hyper Evo 212 cpu cooler and put it back into the case, his grapics card spins its fans on then off and no picture. He has a EVGA 750 B1 power supply with a msi Mini atx am3+ motherboard.