I'm not familiar with the Athlon i7, but I can offer some general advice:
In the case of a previously-working system that has developed this behavior over time, you need to look for what has changed.
Check that every one of the fans in your case is spinning.
Clean out all of the dust bunnies from every fan and every grill.
Check the temperature monitors on your processor, socket and motherboard, either in the BIOS or using whatever monitoring software your motherboard manufacturer provides.
You may need to re-apply fresh thermal paste between your processor and your existing CPU cooler.
Last edited by JustAnEngineer
on Tue Jan 14, 2014 5:23 am, edited 1 time in total.
i7-4770K, H70, Gryphon Z87, 16 GiB, R9-290, SSD, 2 HD, Blu-ray, SB ZX, TJ08-E, SS-660XP², 3007WFP+2001FP, RK-9000BR, MX518