Odd random restarts generally are caused by overheating issues tyr checking if it does the same while just doing web surfing or any other thing also check if its not PSU related most people recommend Corsair as a great brand for PSUs but it isnt as far as I know Evga branded psu are made by the best PSU maker dont remeber its name, anyways also did you do a run with malware bytes or any antivirus programs?