#alienware aurora r7

My Alienware aurora r7 every time on boot up goes to the supportassist and runs a hardware check and every time it says cpu fan error and then my computer sounds like a jet engine. I checked my mother board and I don’t even have a CPU fan plugged into the cpu fan slot. Just a fan pump on the cpu...

I'm considering upgrading my gpu and I would like some advice on where I should go from here...? My specs: Alienware Aurora R7 Intel Core i7 8700 Windows 10 Home 64bit NVIDIA GeForce GTX 1080 with 8GB GDDR5X 128GB M.2 SATA SSD 2TB 7200RPM SATA HDD 460W APFC PSU Air Cooled Chassis Tray load DVD...