Splatulated

i have 5 corsair RGB fans in my pc and up until today it was fine, ive changed no settings how to fix how to stop my PC from over heatign if it doesnt detect my fans????

i'm trusting software to keep your pc from melting What if it crashes without telling me Or doesn't open Or update fails and stops working Or Windows update kills it Or millions Or worse 90c for long periods is damaging of things with out the software my pc was running at 90C on cpu and like 80C on gpu is there fail safes for if the software fails that it will keep the fans working as last settings the software was in?

I dont get this software Apparebtly i need it or my cpu will get to 90c tho and ive been told thats bad