Overheating on startup with Corsair cooler

May 22, 2018
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I replaced my old fans earlier this morning and I decided to turn it on but my Corsair cooler turns red then a few seconds later it turns off. I’ve very recently applied thermal paste but either way it was working fine before I got the better fans.
 


You dont give any real details (chassis? cpu? system??); if it is something like a Dell system, it may have a BIOS lock on fan speeds that will shut down all the fans with NO WARNING if any are outside of the expected RPM range.

I had this happen to me a couple of years ago, it cooked the new cpu I had just fitted.