Hi everyone, I was wondering if someone could do me a favour. I have an 13 inch model - HP Spectre 13 -ae000 I recently was getting a BIOS error saying my fan was not working properly. I believe i successfully replaced it with a new part, as I am not getting an error anymore, but when I stress test my PC to get the fans running, the fan I replaced runs at a high RPM (4000ish) , while the other fan runs at (100ish) RPMs. I've attatched an image that may help. I was wondering if this is normal behaviour, or if my other fan is broken as well? And If anyone can replicate my test as well that would be appreciated...I googled online stress test, and used the program "SpeedFan 4.52" Thanks.