A new heat sink and fan, and use lots of Thermal goop.
So I've built a heavy hardware near top of the line computer.
Intel Core 2 Duo with Stock Fan
Stock Power Supply
It won't stay on for more than like 1 or 2 minutes after I hit the power button. My theory is either its overheating because the CPU fan was sort of hard to click in and seemed loose. Or the fan just sucks. I only have one other fan besides the stock one and I have a Zalman system cooling fan on hand that is extremely big and probably would keep the whole system layered with frost.
Anyone have any other ideas?