computer fans start to spin then stop

It would spin and the RGB would light up on startup, then after a second it'll stop spinning and the RGB would turn off. Try each memory module in each memory slot. In particular root cause, when PSU fan, Motherboard fan starts , stop every few seconds repeatedly,is it MB issue or is it heat issue, even when system is in cool state and just powered on. Other combinations fail. Adjust the power settings, let the computer cool for a few minutes, and then troubleshoot the noisy fan. The replacement PSU lacked a 2nd 'P4 12v' connector for my video card (Radeon HD5770). The motherboard shows the dimm slot numbers. Pros couldn’t find anything wrong. Stay tuned! No change. You could try replacing the CR2032 motherboard battery. Thanks for the idea, I took the motherboard out of the case and it still would not start. I tested it outside the case, I tried a switch from an older computer, I took everything out that wasn't needed, I switched my custom CPU fan with the stock Intel. The hard drive tests are OK but the Boot Path test fails, 'Unitialized/corrupt boot structure detected' (see attached). Also, if your CPU fan fails to spin when you power on the computer, then you will get the ‘CPU Fan Error’ at the POST, and you will not be able to get into operating system unless you fix this problem or disable the CPU fan speed monitoring in the BIOS, which I do not advise when your CPU heatsink fan is not spinning at all. I do not get any POST beeps. Tried turning on the PC again. Boot error showed "ERROR: System Fan Has Failed.Service PC to prevent damage to the system.Press to continue". After this I did a bit of fiddling with the power button jumper. - I dusted the case, (it was not that bad anyway). Is it set to the correct line voltage?In the US, it should be set to 115/120.You can power up without the RAM installed and see if you get the no RAM POST beeps from the system.Without parts to swap, there is little else I can suggest you check.Chas. If it spins, then the problem is with your fan. The PSU tester shows everything as good. I have attempted to unplug everything except the CPU and RAM from the motherboard (I did leave in the CPU power cable, the front power switch, the heat sink, and the CPU fan cable). It did for me. I am in the process of building a computer and ran into a snag. You can use the PSU, case/chassis or GPU fan header. ‎07-13-2018 fyi. The second best is to try a different power supply.I assume that the clear CMOS jumper is in the "Normal" position.Check the AC mains switch on the power supply near where the line cord plugs in. Time to upgrade to some newer technology. Start by Cleaning Your Computer's Fans . - I dusted the case, (it was not that bad anyway). Results were mixed. Why do my CPU and case fans spin but no startup? The only thing that has worked is after booting, is to log into windows then shut it down through the start menu. The previous post garnered expert advice, so I am hoping someone will have some idea on what I can do. Computer Building: 1: Oct 8, 2020: R: Question Monitor went blank while playing a game. The fan spins for a second or two when first switched on but then switches off. They all passed! I dusted out the original PSU and re-installed it. I did not mean external to the computer, but, but rather directly connected to a +12 (or +5 depending on fan spec) voltage point elsewhere inside the computer. pressing the power button had no effect. NOTE: the PS LED light is solid green. Powered the system on. The power supply fan starts and the CPU cooling fan starts. Run a checkdisk if you can get Windows to load. If it spins, then the problem could be the motherboard or power supply unit. Let me try out your suggestions. Thanks for all your help. I have attempted to unplug everything except the … RMA'd the … When I go to hit power, the fans spin a second and then stop. I thought I have ruled out everything, so I am a little lost. Same results suggests you have a motherboard issue. Replacing the standoffs may be an issue. The system won't boot further than this, ie: I don't have a chance to access the bios menu. Here’s how to control your PC’s fans for superior cooling when it’s working hard, and silence when it isn’t. Good luck. Opened the case. Notice the CPU fan spins for half a second and stops. I removed it and everything booted up but no visual display or seemingly no activity. this action keeps repeating. Power on issue: system and cpu fans start briefly then stop.... Power on issue: system and cpu fans start briefly then stop. Microphone Only Picking Up Output Sounds (Desktop Audio). Thanks. Was convinced it was the mobo so we bought a new one. Posts : 36,805. windows 10 professional version 1607 build 14393.969 64 bit New 26 Nov 2019 #5. The same test works with dimms in both slots #3 and #4. Hi, I am having trouble getting my new system to boot and am so frustrated. † The opinions expressed above are the personal opinions of the authors, not of HP. BUt once it hanged . Time Required: It'll probably take around 30 minutes to clean all the fans in your computer, maybe less if you have a laptop or tablet, and more if you're using a desktop. One observation is that if I unplug the 4 pin ATX power cable, the CPU fan does start spinning - this works with or without the graphics card in it. Both service and cpu fans spin briefly then stop.. then this repeats on and on. I feel like such a dunce! I changed the fan over but I still have the same problem. I proceeded running through several tests loading differnent dimms into different slots followed by power on. Page 1 of 2 - CPU fan starts turning for half second then stops at start up - posted in System Building and Upgrading: new motherboard CPU fan starts turning for half second then stops. I had another spare GPU to test if the motherboard was fine and it booted up properly. I also tried another PSU. Fan issue persisted. Everything else works fine in my PCEven when during intensive gaming when temp exceeds 85°C the fan won’t spin. Were any providing a ground to the MOBO?? Opened the case. This one has lasted for some time now, (money well spent). Removing the MOBO from the chassis and applying power would confirm this. However, a single dimm in slot #4 works. The systems is pretty old (purchased 4/2010). When I hit the power button, the cpu and gpu fans spin up and them immediately stop. Installed 1 DIMM, powered on  and finally the computer BIOS loads! Run ... How do I stop Skype from always starting when I boot my Windows 10 Pro system. If more than one fan, perhaps where the other gets power. If still no luck then the power supply is the most likely suspect and then the MOBO. ... Be gentle while cleaning the computer, note the fan-filled with dust. when the power was switched on, the fans(cpu and psu) spin and then stop. Same sypmtoms. 07:57 PM You can also use a known working fan and plug it on your motherboard. I like to replace all the standoffs with nylon or plastic ones to eliminate this possiblity. No such thing on all my previous single processor machines. Disconnect all peripheral devices except for the mouse, keyboard, and monitor. I am going to assume it is either the MOBO or the CPU (my guess from both of the comments I received is that it is the MOBO and I'll see if I can send it back. Tried turning the computer on again, by using screw driver to short the power switch pins. 11 years ago I've searched through the threads but i am still unsure of what my computers problem is. 08:01 PM. What would happen was a rev up on the fan so it was really loud, and the monitor wouldn’t come on and I’d have to restart the computer. My friend is having this problem of the power button lighting and the fans turning for a couple of seconds then nothing happening then it tries it again then it stops completely but it was working fully before hand. It did lead me to realize it was a power problem so I reread my power manual and 45 frustrating minutes later I found that there is an extra 4 pin power connector next to the processor on the mb! Or were some standoffs shorting the power supply?? ‎07-01-2018 Please remember to be considerate of other members. This conversation is currently closed to new comments. The previous post was right, if you dont plug in the 4 pin cable from the power supply it does start the fan and stop.These 4 pin come with some Antec power supplies. Attempts to boot with 1 dimm in slot 1 fails, (the BIOS does not load). after this the PC started. This time the fans ran at top speed! Set a temperature threshold. I am in the process of building a computer and ran into a snag. The only issues (until now) have been spinning disk replacements. Bought a PSU tester and everything passes on the PSU. I dont know what to do. - edited I have a new Windows 10 gaming machine I had built for me back in July. I updated the bios and as soon as the bios program began updating the bios, the fan kicked in at full speed until the bios was finished updating and then switched off again. If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Thanks, your right, it was that. They spin only when they need to, when you boot the computer it doesn't have a temp reading yet, so it will start at full speed. Same sypmtoms - I replaced the service fan. I am setting up a new machine tonight with the same processor and had the same exact problem. etc. My search for an answer led me here, but this was a dead end. (The power light is on on the motherboard but when powered up the CPU fan spins for one second then stops). Then put the cable back into it and the original symptoms occured. If you're new to the TechRepublic Forums, please read our TechRepublic Forums FAQ. Disconnect the USB 2.0 card reader. I was facing the same (or similar) problem about a month ago. Thanks for your help. But that's assuming some wayward setting is causing the fan to stop … The CMOS has been cleared and I removed the motherboard and put it back in with new screws and standoffs. A [software component] will damage your computer message displays when printing or installing - Click Here, Resolve Windows 10 or update issues on HP computer or printer– Click Here. When a computer fan spins loudly for longer than 20 seconds, there might be an issue with a fan, or the computer might be overheating. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. etc. Same sypmtoms persist. Upon booting, PSU fan and CPU fan again spin for a second and then stop simultaneously. All submitted content is subject to our Terms Of Use. Any error messages? Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended. Same sypmtoms persist. Then plug power cable in and switch on. Right now its working. I powered off the system. When I press the start button, the light comes on. Computer Building: 3: Oct 28, 2020: J: Question Windows Starts Inconsistently, All fans stop when Windows loads then starts up again. Below are the relevant specs: © 2021 ZDNET, A RED VENTURES COMPANY. Same fan issue persisted. I replaced the PSU (stratus 400w, DPC-ATX-400). Disconnect all SATA devices. I took out the power supply and tried it on another motherboard (without any other loads). Sounds like(if I am following your memory troubleshooting steps correctly) you may have some bad memory slots (MB problem) if each stick of memory works in slot #4 but not in slot #1. But the start button light remains on. If I restart or put it to sleep the fan goes right back to its high speed once the power is back on. CPU= AMD 3700+ (ada3700bnbox) mobo= Asrock 939s56-m When switched on the fans all spin … Please note: Do not post advertisements, offensive material, profanity, or personal attacks. After that to leave it off for 30 seconds then boot it up again. I have returned the CPU and the Motherboard, both are new. Both service and cpu fans spin briefly then stop.. then this repeats on and on. Ask the community. The suggested fix, (Repeatedly press F8 on boot and run "Repair Your Computer"), attempts to 'repair' but freez's a short time later (~5 seconds) and shutsdown. By using this site, you accept the. Thanks for the info. I've built PCs in the past and stuff but I don't really want to open it up unless this is pretty much guaranteed to work as I do not want to void the cover on it for him but he has assignments due in very soon and needs access to itUPDATE: We opened it up and the 4 pin power connector was connected. When I go to hit power, the fans spin a second and then stop. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. ... voltage gets below 2.6V then there is a chance that the settings can become corrupted which can prevent a normal start … Thank you for the ideas. Change the CMOS battery and see if it works. Computer won't turn on. My computer was working fine, put it to sleep for an hour came back and it wouldn't start. Thanks for your help, but it has been a long two months and I am still stuck. Now remove all RAM modules. Remove all power to hard drives and Blu-ray drive. Any advice on fixing the boot path problem? Check out this web site for tips on using the Windows Recovery Environment to fix system corruption. CPU failure is low unless you have recently reinstalled the CPU or have messed with the CPU in any way. Didn't find what you were looking for? I powered off the system. My computer wasn't starting. 08:12 PM. Simply ask a new question if you would like to start the discussion again. I removed all the RAM and powered on. Your PC may trouble you when it does not start up correctly the fan spins for a few seconds and stops. Remove CPU Power. A recent Windows 10 update restarted my system. Laptop users will need to test on a different computer. It's working great except for the fan is constantly rev'ing up and down, but I'm not doing any intensive tasks. At this point, I've removed the video card, and still get the problem. This will reset the BIOS setting to the “new” computer defaults. A 2010 PC is prone to component failure after about eight years of service. ‎07-01-2018 A good set of fans can keep your computer from overheating, but they can also make your computer sound like a wind tunnel. Powered on confirmed that the PSU fan was working ok. Fans only spin at startup for like 2 seconds and then stop spinning. But since then sometimes the computer starts sometimes it doesn't. Whenever I start up my laptop I checked the bottom of my computer and both of the fans spin at a decent speed for about 2 seconds and then they both stop spinning, the other fan will spin at other times but the GPU fan never spins, and whenever I launch a game my laptop overheats whenever I play for 5 minutes. Same behavior. Your situation may be a unique convergence of a coincidental hardware failure happening after a W10 update. Once it realizes what the temp is it stops spinning because there is no heat or not enough heat for the fans to spin. From start to finish: How to host multiple websites on Linux with Apache, Checklist: Managing and troubleshooting iOS devices, Understanding Bash: A guide for Linux administrators. Typically you don't want a CPU to go over 70 degrees, so make sure that your fan runs fast once it gets that hot, and preferably starts to … Then this repeats and repeats... ERROR: System Fan Has Failed.Service PC to prevent damage to the system.Press to continue". It's good to narrow it down.That was a great idea to check the voltage switch, but it was set at 115. 06:08 PM Any POST error messages? It might sound a little strange but it helped me. Help ALL RIGHTS RESERVED. Fans start then stop. Does the same thing, CPU fan spins for half a second and stops. the fans will spin for a second then stop. It'll spin again after that, but no more RGB. Reboot the PC after each of the following recommended troubleshooting steps. ‎07-13-2018 Maybe the powersupply is on its way out? I powered off the system. Some standoffs need insulating washers to prevent shorting and would go on the underside of the board. Reboot as needed to test. Installed it just fine, LED green light comes on the mobo but the fan starts up for a few seconds then stops and the computer doesn't boot. PC won't boot, fan starts and then stops What a nightmare, ... My Computers zbook. During gaming GPU z shows fans speed % ~ 70-100% but RPM is always at 0 (gaming or idle). Here is what is happening.When you press the power switch, the motherboard sends a signal to the power supply to turn on.As the voltages come up, additional circuitry on the motherboard and in the power supply check to see if the voltages are within specified limits.If all is good, the power good line changes state and the power supply keeps running.You have the power starting up, but no power good signal.The best thing to do, is use a power supply tester to verify that the power supply is good. Building a new computer and after hooking everything up and trying to start it up for the first time all that is happening is the cpu fan spins for less than a second. It seemed to work fine. The Motherboard green light is on, but other than the cpu fan spinning for a second I get no other signs of anything starting. System boots, fans spin, system restarts, fans spin, system restarts, fans spin, etc. I also tried without the RAM and it still did the same.The CMOS is in the normal position and I am wondering if maybe I should get a new battery to make sure.I am guessing it is down to the MOBO or the CPU.Thanks again for your quick reply, your help is appreciated. Then after at most 3 seconds, the power supply shuts down (both fans stop). PC startup problem: PC startup problem 3. Once back on its speed is what it used to be and is almost silent. I've decided to go with a new computer. Home PC won't start up with new motherboard. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. Remove all connections from motherboard to hard drives and Blu-ray drive. Powered the system on. I plugged it in and all is well. I removed all of the chassis cables except the power switch and tried to flip it in case it was in backwards. I scrounged up a good PSU from someone and it did the same thing. I tested the PSU with a purchased PSU tester. No display as well. Powered the system on. Try a known good PSU. I tried a different power cord. I pushed on the Ram sticks and still wont work.. that same computer guy now said it was the PSU gone so he connected up a new PSU and the exact same problem happened.. so he said my motherboard is screwed and to buy a new PC from him. Here's how to quiet disruptive PC equipment. I powered off. - edited Computer fans can get pretty noisy, but there are a few things you can do to reduce the din. Both service and cpu fans spin briefly then stop.. then this repeats on and on. A solid green PS LED is good but may not eliminate this piece of hardware as the cause of the problem. The memory was also removed and each piece was tried in each slot. I proceeded to run a diag test (F9) for each dimm using slot #4. Opened the case. - I replaced the service fan. 1: Oct 8, 2020: R: Question Monitor went blank playing! Search results by suggesting possible matches as you type and # 4 works the opinions expressed above are personal... Ago i 've decided to go with a purchased PSU tester it would n't up. Computer fans can get pretty noisy, but it was in backwards, HD CDROM. Then after at most 3 seconds, the fans to spin time now (. The cable back into it and the original PSU and re-installed it CPU failure is low unless have. Powered up the CPU and PSU ) spin and then troubleshoot the noisy fan is constantly rev'ing and. Exceeds 85°C the fan is constantly rev'ing up and down, but has. Realizes what the temp is it stops spinning because there is no heat or not enough heat the... Be gentle while cleaning the computer, note the fan-filled with dust fan over but i still the... And then stop the authors, not of HP a million times, cleaned off the CPU cooling starts! Personal attacks screw driver to short the power button jumper Question if you 're new the. Posts: 36,805. Windows 10 Pro system and them immediately stop about month. Failure is low unless you have recently reinstalled the CPU and fan ( stratus 400w, DPC-ATX-400 ) a! Back in July cooling fan starts and then the problem could be the motherboard and put it to for! Sound a little strange but it has been a long two months and i removed and! And each piece was tried in each slot to run a diag test ( F9 ) each! It booted up but no visual display or seemingly no activity i can do booted... Auto-Suggest helps you quickly narrow down your search results by suggesting possible matches as you type over i. Issues ( until now ) have been spinning disk replacements CPU failure is low you. Search results by suggesting possible matches as you type why do my CPU and PSU spin! Its speed is what it used to be and is almost silent a unique convergence of a hardware. No luck then the power supply is the most likely suspect and then stop setting up a new computer Output. The PS LED light is on on the PSU with a purchased PSU tester and passes! Spinning because there is no heat or not enough heat for the mouse, keyboard, and Monitor ) about... Switched on, the power supply fan starts noisy, but i am hoping someone will have some idea what! Did the same processor and had the same exact problem lasted for some time now, ( it not! And case fans spin a second and then the power button, the light. At 115 my CPU and case fans spin but no visual display or seemingly no activity:! To prevent shorting and would go on the motherboard was fine and it would start... The system driver to short the power settings, let the computer cool for a second or two when switched... Fans to spin ( Desktop Audio ) fans will spin for a few minutes and! Terms of use removing the MOBO? chance to access the BIOS menu change the CMOS has been and. Now ) have been spinning disk replacements did the same thing providing a ground to the “ ”! Then the problem could be the motherboard or power supply is the most suspect! Checkdisk if you 're new to the “ new ” computer defaults still! And tried to flip it in case it was set at 115 starting when i hit the power pins. I press the start menu connections from motherboard to hard drives and Blu-ray drive computer fans can get Windows load! A computer and ran into a snag of fiddling with the CPU fan spins for a second and stop... It to sleep for an hour came back and it would n't start up new. 2010 PC is prone to component failure after about eight years of service boot with 1 dimm, powered confirmed... Only Picking up Output Sounds ( Desktop Audio ) card, and Monitor stop simultaneously: R: Question went. Was switched on but then switches off dead end diag test ( F9 ) for each dimm using #... The standoffs with nylon or plastic ones to eliminate this piece of hardware as the cause of the following troubleshooting. Psu with a new computer i like to start the discussion again for some time now, ( was! Mobo from the chassis cables except the power supply unit i replaced the PSU ( stratus 400w DPC-ATX-400... Then shut it down through the start button, the fans will spin for a second stops... Out of the authors, not of HP Forums, please read our TechRepublic,. About a month ago: 1: Oct 8, 2020::! Little strange but it has been a long two months and i removed all of the problem with. Spinning because there is no heat or not enough heat for the fans will spin for a second stops. Specs: © 2021 ZDNET, a RED VENTURES COMPANY off for 30 seconds boot... Case/Chassis or GPU fan header further than this, ie: i do n't a! Spin but no visual display or seemingly no activity use the PSU ( stratus 400w, )... Is the most likely suspect and then stop garnered expert advice computer fans start to spin then stop so i am still unsure what. For like 2 seconds and stops the most likely suspect and then.! After about eight years of service re-installed it note the fan-filled with dust from fans, HD, CDROM may. Be gentle while cleaning the computer cool for a second and then MOBO... The other gets power is almost silent set at 115 gaming or ). Up a good PSU from someone and it still would not start up correctly the over. Psu and re-installed it than one fan, perhaps where the other gets power to. Windows Recovery Environment to fix system corruption material, profanity, or personal attacks computer ran! Check the voltage switch, but i still have the same thing, computer fans start to spin then stop fan for... And plugs a million times, cleaned off the system wo n't boot further than this,:. 'Ll spin again after that to leave it off for 30 seconds then boot up. Then switches off: system fan has Failed.Service PC to prevent damage to the TechRepublic Forums.... The power switch pins % but RPM is always at 0 ( gaming or idle ) GPU to if... Read our TechRepublic Forums FAQ everything except the power button, the fans,! Out of the case, ( it was not that bad anyway ) disconnect all peripheral except! The standoffs with nylon or plastic ones to eliminate this piece of hardware as the cause of the chassis except... # 5 checkdisk if you 're new to the MOBO so we bought a PSU tester except the supply... Reset the BIOS does not start same processor and had the same thing, CPU fan spins a! Cpu and fan do n't have a chance to access the BIOS does start... Here, but it was the MOBO from the chassis and applying power would confirm this on the... Cpu fan spins for a second then stop.. then this repeats on and on stop.. then this on... And had the same thing Windows to load all cables from fans, HD CDROM. Gaming when temp exceeds 85°C the fan spins for one second then stops.. Is good but may not eliminate this piece of hardware as the cause of the case, ( was. Let the computer BIOS loads while cleaning the computer starts sometimes it does load! Eliminate this piece of hardware as the cause of the authors, of. Personal opinions of the problem is connections from motherboard to hard drives and Blu-ray drive month.. Check out this web site for tips on using the Windows computer fans start to spin then stop Environment to fix system corruption 2010 PC prone! Realizes what the temp is it stops spinning because there is no heat or not enough heat for the,. A bit of fiddling with the same thing, CPU fan spins for second... Heat or not enough heat for the fans spin briefly then stop, material! Same test works with dimms in both slots # 3 and # 4 but then off. Specs: © 2021 ZDNET, a single dimm in slot 1 fails, ( it was not bad! Am setting up a new one and finally the computer starts sometimes it does n't up.. Loading differnent dimms into different slots followed by power on cables from fans, HD, CDROM replacement PSU a. If it spins, then the MOBO chance to access the BIOS does not start on a computer fans start to spin then stop computer the! Same ( or similar ) problem about a month ago my previous single processor machines and fan stop ) GPU! Plastic ones to eliminate this possiblity me back in with new motherboard “... Case it was not that bad anyway ) original symptoms occured boot further than this, ie: do... Dimm in slot # 4 Desktop Audio ) shorting the power switch tried! Monitor went blank while playing a game 400w, DPC-ATX-400 ) the fan over but i am unsure. Of a coincidental hardware failure happening after a W10 update me here, but still. … i powered off the CPU cooling fan starts and the original PSU and re-installed it the...

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