You can check whether the fan is faulty or not by inserting it into another CPU fan header or even the chassis system fan header (SYS_FAN). Your fan may be running, but not at full speed which it may require. So, as you can see, this is a major issue that you need to address as soon as possible. Press F10 to save changes and exit. I checked the fan and it is spinning as usual, so i unplugged the cable for the fan and reconnected it.. but no detection in the bios. If you have an entry-level or budget category motherboard, then in most cases, it will only have a single CPU fan header, and if it is not working, then it is better to replace the motherboard, especially if it is under warranty. Know your PSU Specs, Best M.2 PCIe Adapters for NVMe or PCIe SSDs in 2021, Best RTX 3060 Ti Cards for 1440p Gaming [Custom AIB Models], RX 6900 XT vs RTX 3090 vs RX 6800 XT Comparison & Benchmarks, RTX 3060 Ti vs RTX 2080 SUPER vs RX 5700 XT Comparison & Benchmarks, RX 6800 vs RTX 3070 Comparison and Benchmarks. If your motherboard is not getting power and the case fans are also not spinning, then it is an issue with the power supply, and you need to get it replaced if it is faulty. You can check and monitor CPU fan speed by using good third-party hardware information programs like HWMonitor and HWiNFO. While I still believe it is due to a motherboard faiure in the fan control circuit, I learned there is indeed a BIOS setting that will bypass it. When i opened up the case i found out that the cpu fan is not spinning. 511-CPU fan not detected but fan runs at Max speed continuously - posted in Internal Hardware: I recently bought this HP ProDesk mini desktop … So, it is better to replace a fan that has a bad bearing or has its bearing worn out by too much dust. Press F10 to save changes and exit. I just recently finished my rig and I'm struggling with the CPU fan A LOT. Hi to all, i am a Filipino so please bare with my English and grammars. Fan speed lower limit was set to 200 RPM so we change this to ignore. I am using stock cooler comes with a processor. GIGABYTE GA-78LMT-S2PT rev 4.1 Motherboard AMD AM3+ FX-4300 4 GHz FX-Series Four-Core Processor 4 GB DDR3 RAM Corsaire 450 Watt PSU Transcend 1 TB HD after assembled CPU fan working, all lights start, but monitor LED on and blinking and not a single beep heard. After logging in you can close it and return to this page. You can click Start -> Power -> Restart to reboot your computer, and check if the CPU fan spins after a reboot. The fan can get clogged with dust and lint hence preventing it from spinning. This is the order of things from Monitor to Motherboard: Monitor > Cable > Port on Computer > which is either connected to a Graphics Card in a slot on the Motherboard or to Onboard Graphics Hardware which is part of the Motherboard. If your CPU fan is not spinning to its full potential, then it is also a matter of great concern as it will cause your CPU to run hotter and may lead to serious thermal throttling, which can lead to serious performances loss. your mobo has 6 fan connectors, so its probably not difficult to accidently not use the designated one. A jammed or faulty bearing due to dust and debris can also cause your CPU fan to stop spinning. 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). Mobo: MSI B85-G43 … As simple as it sounds, restarting your computer might be the fix for your issue. If you haven’t replaced your CPU or motherboard before, always ask for a specialist’s help because this is not a simple fix to do by yourself. This message just seemed to appear. I went through a period of not using it at all for about of week and then the fan was working again. Here is an HP forum post from someone with a Pavilion 21 who was having the same problem. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. I noticed that the rear exhaust fan right next to the PSU was not spinning. The resetting of your desktop is due to Explorer.exe crashing. However, the CPU fan in not outputting anything it just says N/A.. Check out: Best Static Pressure Fans for CPU Heatsink & Radiators. If this does not work, the only thing left to do is to replace the motherboard. Find out Why & How to Fix it [Solved], Best Graphics Card Buying Guide with Top Tips for 2021, Fix Hard Drive Overheating for PC & Laptop [Lower HDD Temperature], How to Increase FPS or Frame Rate in Games, How to Find VRM & Motherboard Chipset Temperature [All Methods], GPU Fan Replacement Guide & How to Find Right Graphics Card Fan, What Power Supply do I have in my PC? It may be your power supply since it may be providing some of the different voltages but not others so the fan spins, some other LED's light, but it does not start. If your fan is faulty, then the only solution is to replace it with a similar fan or with the fan that is optimized for static pressure and spins at the same or higher speed compared to the older CPU Fan. And I have to press F1 to Boot, and after that the PC runs smoothly no problems but once its on to long, it shuts off and blinks with a red light. I get the 511 cpu fan not detected and press F1, yet when the computer boots up, the fan is running. Below you can see the CPU Fan Speed of one of my computers using HWMonitor and HWiNFO software. Reboot your computer. The article details how to remove the CPU Fan Error Press F1 to Resume error, which can occur when the computer is booting. If you don’t know what motherboard to buy, check out the latest recommendations we’ve picked out. 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. You may also want to reset the BIOS to its default settings by taking out the CMOS battery for few minutes and then putting it back again on the motherboard. A technology blog dedicated to graphics cards and PC gaming. A faulty fan header is one of the most serious cases of the ‘CPU Fan Not Spinning,’ problem. The noise isn't very loud and it is not constantly spinning and maximum RPM - it is just a constant humming and after a while it is a little like water-torture! Below are some of the causes and solutions for this ‘CPU Fan Spinning Slow’ problem. If the fan is spinning: Go in the BIOS/UEFI and disable the fan monitor setting. However, if I turn my computer off and back on it's most likely that the fan won't turn on again. This may be the problem. Fix Look inside to make sure the fan is spinning and is not making noise. I made sure to properly seat the GPU in the PCI-E slot, and use a 6+2 Pin to power it. Leave the side panel open, connect the power cable, and turn on the computer. 13 years ago In reply to CPU fan not spinning it is by no means unusual for the CPU fans to die, especially if it is dusty. If you’re dealing with a particular issue involving your processor fan, whereas your computer starts normally but the CPU fan does not, we can help you out. OK, for anyone interested, I finally resolved the "CPU Fan Not Detected" issue described in this thread. Gman257. 1. Also, I did not open up the case at all, changed any hardware, or dropped it. This can be incredibly frustrating and could signal that there is a potential problem. The OS is windows 10. CPU Fan Not Working Desktop / Laptop. Well, if the fan's spinning fine, then, either the motherboard sensor isn't working or the fan isn't transmitting the rotational data. Your CPU fan serves the purpose of cooling the machine by spinning quietly in the background. Fix PC issues and remove viruses now in 3 easy steps: This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Your GPU temperature is fine but your CPU temperature is very high. I had massive FPS drops and then saw on predator sense that my GPU heat was sitting around 90 degrees... and then my CPU fan stopped working too lol. CPU Fan Not Working-CPU Fan Not Spinning (Solved) February 7, 2018 By Jon Stewart Leave a Comment. Both working, spinning, the desktop does not appear to be hot at all to the touch. The color coding of fan wires is, I believe universal. Faulty / Jammed Bearing. If nothing works, you should definitely consider replacing your fan. I love Graphics Cards and I have been digging them since GeForce 3 series. Tip 2. Fix CPU Fan Not Spinning – 4 Tips. Double check. It's because your motherboard is trying to set the fan speed lower than the fan is capable of spinning at. This message just seemed to appear. Ive always used EPU-4 engine from asus to keep the computer from using its full power and turning it to full when I want to play a game etc. I am using windows 10. At first it was not spinning at all and it was not detected by BIOS. Yellow = Tachometer 4. A jammed or faulty bearing due to dust and debris can also cause your CPU fan to stop spinning. 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