Yeah. You definitely didn't do it right. I'm serious. Turn it off before you do any damage. I'm not joking around. Take the HSF back off, clean off the thermal paste with a Q-tip and a little rubbing alcohol, dry it well, apply some new thermal paste (size of ONE grain of puffed white rice) and then reapply. Did you apply the HSF right the first time? Did you criss-cross when you applied it? -->
Pin1...Pin2
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Pin3...Pin4
Secure pin1, then pin4, then pin3, then pin2 (or any criss-cross pattern)