2 case fans wont turn on after waking up computer

[Naxy]

Hi all;

 

So for some odd reason, when I put my computer to sleep, then start it up again, 2 of my case fans don't turn on (sometimes). It weird because sometimes I will put my computer to sleep and start it up 2 min later and all the case fans are running fine. Other times I will wake my computer up, a 1hr or 10 min later and 2 of my case fans won't turn on. I have tried to put a load on my computer to see if they startup, but they don't. I mean it's not that much of a problem because I just have to restart my computer or after 3-5 min of computer use they turn on. I am just curious about what the problem could be and if there is a solution to this.

 

Thanks for your help and input!

 

 

 

[Naxy]

So it seems like I sorted it out. I went into the advanced power options, and under sleep, I turned off "Hibernate after" off and it seems like that worked. So weird.