Dec 28, 2018
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I just built my PC two days ago and everything works perfectly except the CPU fan isn't spinning. I am using a stock Intel cooler on an i7-7700k (not overclocking for a reason you should already see). New to PC building.

My GPU fans aren't spinning either, but I am assuming it's because it isn't hot enough. I have the ASUS ROG STRIX GTX 1080 if you're wondering.

My case fans are working perfectly fine though so I don't know if it's a faulty fan or a faulty CPU fan header.

Any help is appreciated!
 

Dark Lord of Tech

Retired Moderator
MERGED QUESTION
Question from frostytehsnoman.sagegaming : "CPU fan wont spin."



CPU fan should spin , but GPU fan will only start to spin when the thermal threshold of 64C is met.

What are your full specs?

There is no stock 7700k cooler , you need an aftermarket cooler.
 
Dec 28, 2018
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Intel - Core i7-7700K 4.2 GHz Quad-Core Processor

Intel Stock Cpu cooler

Gigabyte - GA-Z270X-Gaming K5 ATX LGA1151 Motherboard

Corsair Vengenace RGB LPX 2x8 3000mhz DDR4 2x8

Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive

Cooler Master - MasterBox Pro ATX Mid Tower Case

Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply

Microsoft - Windows 10 Pro OEM 64-bit

ADATA - Ultimate SU800 128 GB 2.5" Solid State Drive

Asus - GeForce GTX 1080 8 GB ROG STRIX Video Card

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I am in the BIOS and it says the fan is spinning at 2327RPM but I don't see the fan spinning at all.