I just build a pc, when I turn it on everything's fine. The fans (gpu, cpu cooler) and led work. But it shows on Tv no signal. I've tried with my laptop and it's not the Hdmi cable or TV fault. I went trouble shooting in a pc shop and it turns out the gpu is faulty. I return the gpu to the seller and when he put the gpu in his pc it works. He returned the money to me but now I'm not sure what to do. Will buying a new gpu fix this