Question All fans run max when computer is sleeping or turned off ?

[AlphaThumbs]

Today for the first time I noticed that my Chasis fans, GPU, and Radiator fans and RGB were all running when i put my computer to sleep, which is odd because usually they turn off. So i turned my computer off completely and the same thing occured. Fans stayed on unless I completely unplugged my PC.
Pc Specs. Its not done this ever before and I've had this PSU for quite along time, could it be the PSU? Any help would be appreciated.