Cpu at 90 but cpu fan at 0 rpm

Mervid

Prominent
Jun 22, 2017
2
0
510
A few days ago I got the fan speed error on startup. I opened up my computer and blew away the small amount of dust that was there. But now I notice on speedfan that it says my cpu fan is at 0 rpm (but it's spinning in real life). I wonder if it's possible that my computer doesnt understand that my cpu fan is running and then assumes that my cpu is overheating. Because when I feel on my computer it's cold, not even slightly hot. And all the fans are running at full speed.

https://gyazo.com/04c36938ded72e51707ef209c9a40027 (this is my computer, and yes, I got mafia 3 when I bought it :))
 

Mervid

Prominent
Jun 22, 2017
2
0
510


Should I just get a new one or is there anything I can do? It's a holiday right now in Sweden so most stores are closed, would like to fix it ASAP. :)