Hello, so just yesterday I went over to my friends house and gave him my old 750 ti. I put it in the motherboard and made sure it was secured. I installed the nvidia drivers and made sure the system was detecting the card, which it was. The power supply for his system is an atx 500w, more than enough for a 750 ti. Everything was going smoothly until I left, when he texted me saying that his computer kept crashing every now and then. I told him to check his temps and everything was >70. I don't know what the issue is if it's not overheating. The computer just keeps crashing without warning. Thanks in advance.