You would want to replace that, the only review I could find on that thing gave it a 4 / 10 rating which is horrible for anything that is running a gaming system.
For a 380 get about a 500 + watt good quality power supply, XFX, EVGA, Seasonic, Antec, nothing in the cheapest prices from them, a good quality power supply would be about $60-80 for something mid-range. Also make sure your old drivers are wiped, uninstall all video drivers, run DDU, install the AMD drivers.