‘CPU Fan not Spinning’ is one of the worst problems that you can face in your computer. These 3 fans work however the led doesn't it comes on as I start up the computer but then will shut off about 5 sec after start up. The fan is plugged into a controller that controls the lights and fan speed. I just built a new PC, and chose the Cooler Master Masterbock MB311L Airflow Micro-ATX Tower as a case. This can be customized with the iCUE software. Have you … Major props to Cooler Master for this particular design. Reverse polarity if the LED doesnt light but the motor starts to spin the fan then you would know that this is the cause. It’s often explained as “LEGO for adults.” But managing the air cooling system within a PC is considerably more complex. That is the junkiest case on here, just about. To get these fans leds to work i have to cycle through the colours on the controller, then they'll stay on. 2. rear, for good air crossflow to keep the inner works cool. This gets my fans to spin … Plug that to the PSU and the 3 fans spin without problem. When looking at our fans, the Front or Intake side of the fan will always be the side that has the Cooler Master Logo in the center of the blades. They normally always start spinning when i … If there's just the 2 case fans in front, you need to add the 3rd. I just purchased the H500 case the two front fans spin properly but i have two male 4 pin connectors for the rgb and I'me not … 2 years ago. Call CP, they will replace that fan under warranty. The Rear or Exhaust side (the side that the air comes out of) of our fans will always be the side that houses the fan motor. The fan connector will have two guides (1) and these will need to line up with the tab (2) that is on the motherboard fan header. Page 1 of 2 - Case fans not spinning - posted in Internal Hardware: When i am using my computer, my case fans are not spinning at all. Also, the "FX" cpu tend to run real hot. RGB works fine, and if I nudge the fan blades manually, they spin up fine. If your CPU fan is not spinning, then it is a matter of serious concern because if your CPU heatsink fan suddenly stops spinning, then it will lead to overheating of the CPU. The wires going into the fan can also get in the way of the fan blades and prevent it from spinning (these fans don’t have a lot of torque). The fan can get clogged with dust and lint hence preventing it from spinning. Nov. 20, 2018, 2:57 a.m. The fan will function normally no matter type of fan header is used. If the CPU rad is in the rear, the top fan will be open. Not every motherboard will have all these options—some simplify it more than others—but most will follow this general pattern. I would not run one with a single fan on a 120mm radiator. Building a modern desktop PC is surprisingly easy, thanks to modular parts and a lot of solid engineering. This is my first case with RGB. If you have 2 front fans, you MUST have a 3rd, pref. We’re talking about physics, thermodynamics, all sorts of fun stuff. If the fan doesn't need to spin, it won't. The one on the case interior would be pushing air through the radiator and the one between the … The other 3x120mm are just case fans and I have this plugged into a fan header on my motherboard. But the front panel fans do not register as fans with the BIOS. If your CPU fan does not spin, the issue could be anywhere from the fan, the motherboard, to the power supply unit. I would get 2 fans, install then in a push pull configuration. Hi Grizz, As other users mentioned already, there are 2 wires coming from heac fan, fan power and RGB. Installing a 3 Pin fan to the motherboard: Please Note: You can connect a 3 Pin Fan to a 3 Pin or 4 Pin header on the motherboard. Basically, this allows you to say “Keep my fan at X speed until the CPU reaches Y degrees—then intelligently ramp up the fan to cool it down.” The hotter your CPU gets, the faster your fan will spin. 1. 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