Problem with cooling. Runs fine with on COD for 30 mins but then overheats. I know its a cooling problem but the heatsink is only warm not hot to the touch. I reseated twice with little to no effect. Any potential solutions appreciated. Thank you.
No exhaust? That CPU fan is not enough to blow air out of the case. It just push the hot air close to the rear but it doesn't have the airflow to push it completely out of the case. The hot air stays inside your case and would explain why it takes a while for it to overheat.
Add an exhaust fan at the rear and 1 at the top if you can.