The fan can get clogged with dust and lint hence preventing it from spinning. 2. Everything is connected correctly, but strangely enough, the fans don't spin up when the computer starts or wakes from sleep. But the front panel fans do not register as fans with the BIOS. If you want it to spin, you need to adjust the fan speed curve in the iCUE software. They normally always start spinning when i ⦠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. Major props to Cooler Master for this particular design. 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. This is my first case with RGB. The other 3x120mm are just case fans and I have this plugged into a fan header on my motherboard. âCPU Fan not Spinningâ is one of the worst problems that you can face in your computer. Have you ⦠Also, the "FX" cpu tend to run real hot. The fan will function normally no matter type of fan header is used. Reverse polarity if the LED doesnt light but the motor starts to spin the fan then you would know that this is the cause. I would not run one with a single fan on a 120mm radiator. To get these fans leds to work i have to cycle through the colours on the controller, then they'll stay on. This can be customized with the iCUE software. Weâre talking about physics, thermodynamics, all sorts of fun stuff. Itâs often explained as âLEGO for adults.â But managing the air cooling system within a PC is considerably more complex. If your CPU fan does not spin, the issue could be anywhere from the fan, the motherboard, to the power supply unit. 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. If there's just the 2 case fans in front, you need to add the 3rd. Hi Grizz, As other users mentioned already, there are 2 wires coming from heac fan, fan power and RGB. That is the junkiest case on here, just about. If you have 2 front fans, you MUST have a 3rd, pref. I just built a new PC, and chose the Cooler Master Masterbock MB311L Airflow Micro-ATX Tower as a case. Call CP, they will replace that fan under warranty. 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. RGB works fine, and if I nudge the fan blades manually, they spin up fine. Nov. 20, 2018, 2:57 a.m. Basically, this allows you to say âKeep my fan at X speed until the CPU reaches Y degreesâthen intelligently ramp up the fan to cool it down.â The hotter your CPU gets, the faster your fan will spin. I would get 2 fans, install then in a push pull configuration. 1. Not every motherboard will have all these optionsâsome simplify it more than othersâbut most will follow this general pattern. 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 wires going into the fan can also get in the way of the fan blades and prevent it from spinning (these fans donât have a lot of torque). This gets my fans to spin ⦠Plug that to the PSU and the 3 fans spin without problem. If the fan doesn't need to spin, it won't. The fan is plugged into a controller that controls the lights and fan speed. rear, for good air crossflow to keep the inner works cool. 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. The one on the case interior would be pushing air through the radiator and the one between the ⦠If the CPU rad is in the rear, the top fan will be open. 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. 2 years ago. 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