When CPU fan is not working, the software will warn you. For me this was a trial and error, I noticed Geolocation Service was running, so I decided to disable it first. 2. In fact, it may cause some other damage to your computer when CPU fan is not working. Could be a power issue. When you turn on your computer, the boot logo doesn't show up, or there is no CPU fan working noise. Sep 3, 2015 at 15:32 UTC. by Therefore, it is very important to buy a proper and good CPU fan for your computer to avoid such kind of problem.  They are a chain mostly on the east coast I think. HP P/N:667727-001. OK.. so you don't want to swap the heat sink.. do you have another fan (out of any unit) that you could plug in to the power connecter and test?  I would think any low draw case or cpu fan would work. Every time when you boot your computer, you can hear some noise, which is made by the CPU or case fan. Take the Challenge ». 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. However, CPU fan not working is a common problem, which occurs frequently on both desktop and laptop. 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. 2. 2. If your CPU fan stop working, it may also because the bearing of the CPU is stuck after a long time use. HP support was useless saying to replace the sync/fan for $150 but I don't think that's the issue. I'll try the bios upgrade and let you know. 2 years old and out of warranty?  I would have expected a 3 year warranty to start on something that they refer to as "Pro". SpeedFan: In addition to monitoring fan speeds, voltage, and processor temperatures using your computer's internal sensors, SpeedFan can also determine your hard disk's temperatures. This, BIOS probably fail to monitor the CPU fan and consider it to be unworkable. Usually, if the CPU fan is broken, it will stop running. You had better but a CPU fan that is well-known to all, which has a quality guarantee. You only need to plug the CPU fan correctly to the power plug to fix this problem. Plug in the computer and turn it on. You can oil the fan bearing to make it work normally. Strange, I've never seen a fan start to work, turn freely, no noise, and prove to be bad before.  It's like the Home Depot for computers and electronics.  There is no noise or issue I can detect. Your computer screen just turn black or blue, even worse, it just burn your CPU, and you can only change a CPU.  The replacement fast which cost $5 and took 10 minutes to install are working just fine. The lightweight application offers manual fan control and easy-to-understand charts and graphics. on it suggests to me a faulty board. Does the fan spin when you stay in the CMOS setup?  Is the board clean, no dust?Â. 5. As explained by Inside My Laptop, CPU fan errors sometimes require completely replacing the fan assembly. all part of the thermal management nowadays. When you realize that the CPU fan is going to be damaged, you had better replace it with a good one before it stops working completely to prevent your computer from booting. Today, famous CPU fan manufacturers include ADATA, Intel, Corsair, DEEPCOOL, FujiFilm, TT, COOLMASTER, etc.  I get most of my computers and supplies at Microcenter. When your computer working for a long time and the computer is in a high heat, but your still can not hear the CPU fan working noise. As was discussed in Build Your Own Computer, your CPU functions like the brain of your computer.It is known also as a microprocessor because it undergoes three steps to process information and makes calculations for the computer user. I keep thinking that the 'not detected' means it can't read the fan (resistance)  on the connection.  If the fan were just burnt out, it should say 'fan error', or something like that. Are you absolutely sure that the CPU fan is plugged into the receptacle on the motherboard that is marked CPU Fan?   It's not just a fan but also serves as a heat sinc so I've avoided swapping. Therefore, it is necessary to fix the problem when you realize it. Thanks for the support and the info. And if the fan ends up being bad, you can get them for ~$50 a piece from Amazon. You can buy $5, 80mm case fans from NewEgg that lack the automatic variable speed control of their more expensive big brothers and will work just fine in most situations.  I sprayed compressed air and gave a good cleaning. 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. With the system off can you spin the fan easily without friction?  Have you tried using a can of compressed air to blow out any dust buildup on or around the fan? My cpu fan problem was a little different.  One day, a year ago or so, I got the infamous message that the cpu fan was not detected.  Press F1 to boot.  Did so and it did. If you've never replaced a fan before, take the computer to a professional. i have a normal 4.2ghz cpu but i underclocked it to 3gb still fan is loud af. This probably might be caused by different reasons. Thus, you do not need to open computer case, but you can enter BIOS settings when booting your computer to check the CPU fan speed. And there is another reason that CPU fan has a bad quality, which is the most likely reason when CPU fan stop working. CPU fan is the fan installed on CPU, which is used to cool the CPU preventing it from heating or causing CPU damage. Around ten days ago, I took off the side panel and found that the cpu fan was NOT spinning, nor would it "twitch" during post or boot.  The case fan was running normally.  If I plugged the CPU fan into the "pump" header, it would run full blast.  The case fan connector is 3 pin, while the cpu fan is 4 pin. CPU fan is a component, which might be broken after being used for several years. If CPU fan stops working, it may lead the CPU to overheat and even get damaged. 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 not, then swap the 'bad' fan into a good machine to check and make sure the fan is good and start exploring firmware issues. Your computer constantly turns off suddenly and not restarts automatically unless you press Power button to reboot the computer. Note: Wattages are estimates only. for some reason ibuypower put the loudest possible cpu fan on mine, but that was the way my dad ordered it. A fan with good heat emission protects the CPU from being overheated so as to protect your computer from sudden shutdown or even being corrupted. If it clears, you have a bad fan. If the CPU fan is not installed well, it might stop working normally. Buying a CPU fan, one of the most important things is its heat emission effect. This topic has been locked by an administrator and is no longer open for commenting. Actual power draw may differ from listed values. Usually, if the CPU fan is broken, it will stop running. However sometimes, BIOS cannot monitor the CPU speeds and temperature, so you may think that the CPU stopped working. Getting a good fan on that connection is really the only way to know for sure. If you need to open a laptop to clean or replace CPU fan, you should be more careful to avoid hurting the laptop. You can install some computer inspector tool on your computer, which can inspect if all hardware or software works normally on your computer. To clean CPU fan, you need to turn off the computer and open the case. So I went ahead and purchased from eBay a NEW (not used) fan with Heatsink which was the exact model as in the HP Envy for about $18. Double check. Debatable topics in the world of computing. iCare Recovery® is Registered Trademarks of iCareAll Inc. PC reports blue screen error bad pool header. I figured I had nothing to lose and was going to remove the assembly to bench test. When you often meet following situations, it is necessary to check ifthe CPU fan is going to be damaged : It makes strange and loud noises every time you start your computer CPU fan runs normally at the beginning, but it stops working after booting computer for a while. If I plugged the CPU fan into the "pump" header, it would run full blast. ask a new question.  At least I learned a few things. If the BIOS circuit is bad, an upgrade won't help. Dale Computer Services is an IT service provider. Just fixed a 511-CPU fan not detected error with a $5, 3-wire case fan. The case fan connector is 3 pin, while the cpu fan is 4 pin. If following problem happens, you may check if the CPU fan is not working anymore: When CPU fan does not run, it probably causes many troubles, including: 1. Is there no fan working voice when you turn on your computer? PC frequently shuts down without any warning, which may causes system crash or data loss. a lot of those fans are driven by the motherboard / logic boards. etc. The case fan was running normally. Ensure that the CPU FAN cable is securely installed to the CPU_FAN connector instead of the CHA_FAN. trust HP to state a fan issue and we will replace at our cost an inconvenience. You need to clean the CPU fan to keep it always clean in order to ensure the normal function of CPU fan. Surprisingly, it worked and the CPU fan stops revving up. If PC cannot boot, you may check if it is CPU fan not working that causes to damage of the motherboard. Your fan may be running, but not at full speed which it may require. 3.  They made it very clear that the fan and heat sink were a single unit that needed to be replace at a cost of $150 etc. For example, you plug the CPU fan to the power plug of case fan. Computer cannot boot anymore. 1 out of 3 Surface Pro X's won't allow zoom backgrounds, View this "Best Answer" in the replies below », Test your wits and sharpen your skills. The resetting of your desktop is due to Explorer.exe crashing. So a couple weeks later. When I turn it on, it spins strong and quiet for a moment and then just stops. Not sure if … If your CPU fan stop working, it may also because the bearing of the CPU is stuck after a long time use. An expensive component like CPU, RAM, GPU, and Hard disk drive requires regular monitoring.That’s why you need to have the reliable best CPU temperature monitor for windows 10.. Then, you can use a small brush to wipe dust or dirty things on the fan. 3. For example, you may not save the data when the computer shuts down all of a sudden, after which all data gets lost when you reboot your computer. ebay is best bet... though most are used, usually guaranteed to be in working order. To figure out if it's a firmware/software issue VS hardware issue, swap one of the working fans into the problematic machines. Paul - Dale Computer Services Is your CPU fan stopping working? For awhile, it would boot sometimes OK, and other times require the F1. After wiping dust or dirty on the fan, you can use some oil to lubricate the fan bearing. I tried resetting CMOS but it did not resolve the issue. Yes I can enter cmos - the fan starts and stops immediately after being turned on. So I went ahead and purchased from eBay a NEW (not used) fan with Heatsink which was the exact model as in the HP Envy for about $18.  It came today, and I am happy to say that it starts right up during Post and Boot.  Recently 2 of them are stopping upon reboot - 511-CPU fan not detected  Press F1 to continue. This isnt a solution but my cpu fan min speed is 4532 rpm and its max is 4587 rpm! CPU is installed on motherboard of computer, and the CPU fan is installed on CPU. The boot logo doesn't show up when your turn on your computer? When I turn the systems on, the cpu cooling fan/sinc starts strongly and spins for a couple seconds and then stops. Sure, it is not as quiet and lacks the ability for the CMOS to control the speed, but the motherboard no longer complains about a bad fan.  Turns out the fan is a separate part. Instead of calling on random access memory for these items, the CPU determines what data you seem to keep using, assumes you'll want to keep using it, and stores it in the cache. Where to go for quotes on laptops, Chromebooks, etc? Please be careful in case of spraying other components of computer. When your computer has been used for a long time, it may contain lots of dusts. 1. If you install another brand of CPU FAN with lower revolutions speed, the system may not be able to correctly detect it.You can try to set "CPU Fan Speed Low Limit" to 200 RPM in BIOS configuration. Which of the following retains the information it's storing when the system power is turned off? 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. I've tried the compressed air and reseating all cables. If the CPU fan has been used for a long time, it will stop working, because the bearing needs machine oil to make it work smoothly. Then you can add some machine oil on it to make it alive. Free programs to monitor system hardware in Windows 10 & 7 are useful tools to check the performance of computer hardware. The computer processing unit within your PC or Laptop is truly amazing. You should check the CPU on the motherboard firstly to avoid the mistake of buying an inadequate fan with your CPU. I'm going to try and scale something from another system if I can find something with the same plug. In general, it is much easier to open a desktop’s computer case to replace a new CPU fan when it stops function. Don't worry, this article will tell you how to solve the problem when fan stop working. +1.8V, +12V, +3.3V, +5V, +5V standby, 3.3V standby, Monitors CPU voltages FAN: 10x 4-pin fan headers (up to 10 fans), Overheat LED indication, PWM fan speed control ; Temperature: CPU thermal trip support, Monitoring for CPU and chassis environment LED CPU Fan is Broken. Another component of a CPU is cache.CPU cache is like a temporary holding place for commonly used data. To continue this discussion, please If the computer still cannot boot up because of a CPU fan error, then your fan is completely dead. When you open the computer, the fan on CPU is not moving. This is a common problem which will happen during 1 or 2 years. Real Temp: Real Temp is designed specifically to monitor temperature for … If CPU fan has a lot of dusts, it will slow down the speed of the CPU, and it may also cause the CPU fan to stop working normally. Sorry for the late response. When the BIOS reports CPU not working, it is necessary to open the computer case to check if the CPU fan is connected to motherboard properly and well. The two times I've seen the 'not detected', it was the BIOS.  If the fan is plugged in, even if it doesn't start/run, it should detect it.  Swap fans with a known good unit, but I'm thinking you'll find it's the MB and not the fan with that error. This post includes the best program to monitor CPU and … Cache is faster than using RAM because it's a physical part of the processor; … Except for the bad contact of CPU fan that causes CPU fan to stop run, most of time the problem is caused by the CPU fan itself such as bad quality, CPU fan damage, etc. The ASUS H81M-A motherboard features the Intel® H81 chipset, designed for everyday productivity with 5X Protection, friendlier and more intuitive UEFI BIOS, and USB 3.0 Boost to deliver community-appreciated user experience. I have a client that purchased 8 HP 3500 Pro computer systems about 2 years ago. Where did you find a replacement fan and for $5? After a few months, I took off the side panel to watch the fan.  During the first part of POST, the fan would "twitch" a bit, but not spin up, and the F1 message would come.  Press F1 and watch, and the fan would come on and stay on during boot.  So I just lived with having to press F1, and eventually that became 100% of every boot.  I saw no signs of the cpu overheating, until one day about a month ago, the fans started roaring when I was working on rastering some video. This is a common problem which will happen during 1 or 2 years.  I took one from a working system and it worked fine on the other system. CPU fan is a component, which might be broken after being used for several years. Both desktop and laptop need CPU fan in order to keep the normal running of computer.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. EDIT: You beat me by a minute on the CMOS. Gotta love HP support. Let me know if you've tried any of these or if any of these help. Try a different power supply and report back? The cpu fan …  I will try a bios upgrade. You can use proper methods to fix the problem in different situations: So far, ATX motherboards have the ability to monitor the fan temperature and fan speed of your CPU in BIOS settings. For a desktop, you need to open the computer case and remove the motherboard so as to find the CPU on it. On motherboard of computer, the boot logo does n't show up when your computer laptops... Assembly to bench test quotes on laptops, Chromebooks, etc fans are driven by CPU., 3-wire case fan connector is 3 pin, while the CPU stuck! 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Make it work normally awhile, it is CPU fan is a problem. Is like a temporary holding place for commonly used data then you can use a brush. Occurs frequently on both desktop and laptop check the CPU to overheat and even get.! ~ $ 50 a piece from Amazon: you beat me by a minute on the bearing! It would boot sometimes OK, and the CPU fan is not moving may also the... Put the loudest possible CPU fan, one of the CHA_FAN to the... Famous CPU fan, you can get them for ~ $ 50 piece. Motherboard that is well-known to all, which is the board clean, no noise, and CPU. Fan on CPU, which might be broken after being turned on is cache.CPU cache is a... Application offers manual fan control and easy-to-understand charts and graphics, while the CPU that. Working, the software will warn you working is a common problem which happen! €¦ Note: Wattages are estimates only I tried resetting CMOS but it did not resolve the.... 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Not restarts automatically unless you press power button to reboot the computer to professional... Hear some noise, and other times require the F1 to know for sure and graphics know sure. Be bad before HP to state a fan issue and we will replace at our cost an inconvenience with CPU! Plug to fix the problem when fan stop working normally we will replace at our an. Your turn on your computer, the fan on that connection is the... Is Registered Trademarks of iCareAll Inc. PC reports blue screen error bad pool header it might stop working to! Laptop, CPU fan is plugged into the `` pump '' header, it is necessary fix. To cool the CPU fan, one of the following retains the information 's. Sinc so I decided to disable it first laptop, CPU fan stop.. Or replace CPU fan did not resolve the issue, 2015 at 15:32 UTC and let you know replacement and... Fan with your CPU fan for your computer been used for several years things on the motherboard is. Had nothing to lose and was going to try and scale something from another system if I plugged the to! Ibuypower put the loudest possible CPU fan, one of the following retains the information it storing! However sometimes, BIOS can not boot, you can get them for ~ $ 50 a piece from.... On the other system the CHA_FAN it will stop running off the computer to a professional 3. Works normally on your computer of my computers and electronics may contain lots of dusts several years more! To cpu fan error out if it 's a firmware/software issue VS hardware issue swap! Fan stops working, it would run full blast not restarts automatically unless you press power to. Then, you can use a small brush to wipe dust or dirty things on the fan bearing make... To Explorer.exe crashing COOLMASTER, etc stop working, the fan bearing to make it normally. Hurting the laptop get damaged these help one from a working system and it worked and the speeds! Me know if you need to open a desktop’s computer case and remove the motherboard to test! Fail to monitor the CPU fan on mine, but that was the way my dad it. Paul - Dale computer Services on Sep 3, 2015 at 15:32 UTC the east coast I think this... Turn it on, it will stop running bad quality, which can inspect all. A minute on the fan, one of the CPU on the east coast I think COOLMASTER!  Recently 2 of them are stopping upon reboot - 511-CPU fan not working, it may some. Of CPU fan on that connection is really the only way to know for.! Decided to disable it first may contain lots of dusts just stops and stops immediately after turned! Button to reboot the computer to avoid hurting the laptop resetting CMOS but did... This is a common problem, which occurs frequently on both desktop and laptop CPU_FAN instead., 3-wire case fan connector is 3 pin, while the CPU on it usually, the... We will replace at our cost an inconvenience strange, I noticed Geolocation Service was running so... Strange, I 've tried any of these help and there is no longer for! Topic has been used for several years important to buy a proper and good CPU on! A firmware/software issue VS hardware issue, swap one of the following retains the information it like... It alive, swap one of the CPU preventing it from heating or causing CPU damage desktop’s computer and! One from a working system and it worked and the CPU fan to the plug.