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. The fan can get clogged with dust and lint hence preventing it from spinning. Your computer screen just turn black or blue, even worse, it just burn your CPU, and you can only change a CPU. Reset or flash your computer BIOS. Unscrew the main access panel on your computer. If CPU fan does not work, it may damage the CPU and even damage the motherboard, in which situation your computer will become unbootable. If nothing works, you should definitely consider replacing your fan. And again your temps are very good, better than most!!! This solution usually works if your computer is already making beeping noises or shuts down suddenly. Hi, so I recently finished a PC build and I went to power it on the fans spun, but no startup. However sometimes, BIOS cannot monitor the CPU speeds and temperature, so you may think that the CPU stopped working. Until Microsoft fixes this almost 3 months long bug I have been using this trick to lower the fan speed. When the CPU fan of desktop or laptop does not run, the methods to find the CPU fan and fix or replace it might be different. Archived. Please be careful in case of spraying other components of computer. If the CPU fan is not installed well, it might stop working normally. Motherboard does show CPU as having the fan spinning, but physically it is not. If CPU fan stops working, it may lead the CPU to overheat and even get damaged. Clean your fan. That will tell you if the psu is dead or not (its fan(s) should spin up). If the fan is not working or is making a loud noise, the fan should be replaced. If your CPU fan is not install well on your motherboard, your CPU fan will also stop working normally, you just need to open computer case and install the CPU fan again to make it be installed perfectly on the computer’s motherboard. For a desktop, you need to open the computer case and remove the motherboard so as to find the CPU on it. There are three main reasons why your CPU fan is not spinning properly: the fan is clogged with dust, wires might get stuck in the fan or the fan does not get enough energy supply to spin. Try asking for a specialist’s help, as this is a very high precision task. This problem probably because the power cord of CPU fan is not connected to the power plug of motherboard, but it is connected to other place. When you turn on your computer, the boot logo doesn't show up, or there is no CPU fan working noise. Yes the fan should turn on when it hits a predefined temperature. Cleaning your fan is not an easy task if you haven’t done it before. Another product of age: fan’s bearings can start grinding and straight-up not spinning. Regards, U2 You can uncover the top of the CPU fan, drop one or two little drop machine oil to the axis of the CPU fan, that will make your fan work better. You only need to plug the CPU fan correctly to the power plug to fix this problem. The boot logo doesn't show up when your turn on your computer? PC issues and remove viruses now in 3 easy steps: On some occasions, your PC boots normally, but the CPU cooling system doesn't start. Also this situation can be caused by the contact problem, if the CPU fan’s power cord has a poor contact with the motherboard, the BIOS will also report CPU not working. My PC had been set up at college in a way that that I couldn't see the back. 1. As soon as the heat goes up past a certain threshold the fan lowers the throttle. Is your CPU fan stopping working? If the problems are more serious and require hardware replacement, keep reading for useful suggestions. I have tried unplugging the PSU and holding power for 30 seconds and that didn’t work. 1 or 2 years and even get damaged they normally always start when... Several years to add the 3rd much and also have no need to clean CPU fan, one those... 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