I have restart problem with my pc from few days. I have amd fx 6300, msi 970 gaming, hyper x 8gb, r9 270x, 2x hdd (1 tb and 500 gb), dvd rw, corsair vs550 smps, 4x case fans120 mm. Today smps burned. Was it smps restarting pc and is seasonic 620w good to buy ... Please help.