computer fans start to spin then stop

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! Thanks for all your help. 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. At this point, I've removed the video card, and still get the problem. 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. I've decided to go with a new computer. Thanks. Bought a PSU tester and everything passes on the PSU. - I dusted the case, (it was not that bad anyway). 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. A solid green PS LED is good but may not eliminate this piece of hardware as the cause of the problem. I proceeded running through several tests loading differnent dimms into different slots followed by power on. Please remember to be considerate of other members. When I go to hit power, the fans spin a second and then stop. ‎07-13-2018 PC startup problem: PC startup problem 3. Opened the case. Disconnect all SATA devices. 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. If you're new to the TechRepublic Forums, please read our TechRepublic Forums FAQ. Change the CMOS battery and see if it works. Removing the MOBO from the chassis and applying power would confirm this. Thanks for the idea, I took the motherboard out of the case and it still would not start. Powered the system on. It's good to narrow it down.That was a great idea to check the voltage switch, but it was set at 115. Was convinced it was the mobo so we bought a new one. I do not get any POST beeps. 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. But that's assuming some wayward setting is causing the fan to stop … You can use the PSU, case/chassis or GPU fan header. Your PC may trouble you when it does not start up correctly the fan spins for a few seconds and stops. Same sypmtoms - I replaced the service fan. The fan spins for a second or two when first switched on but then switches off. 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. 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 … I powered off the system. I replaced the PSU (stratus 400w, DPC-ATX-400). Computer fans can get pretty noisy, but there are a few things you can do to reduce the din. When I go to hit power, the fans spin a second and then stop. When I hit the power button, the cpu and gpu fans spin up and them immediately stop. Start by Cleaning Your Computer's Fans . Same sypmtoms persist. 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. after this the PC started. I took out the power supply and tried it on another motherboard (without any other loads). 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. Does the same thing, CPU fan spins for half a second and stops. I tried a different power cord. Now remove all RAM modules. Any advice on fixing the boot path problem? Both service and cpu fans spin briefly then stop.. then this repeats on and on. I powered off the system. 06:08 PM Computer Building: 1: Oct 8, 2020: R: Question Monitor went blank while playing a game. Thanks for your help. - edited (The power light is on on the motherboard but when powered up the CPU fan spins for one second then stops). 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. Upon booting, PSU fan and CPU fan again spin for a second and then stop simultaneously. etc. I removed all of the chassis cables except the power switch and tried to flip it in case it was in backwards. I plugged it in and all is well. Tried turning on the PC again. The motherboard shows the dimm slot numbers. Right now its working. If still no luck then the power supply is the most likely suspect and then the MOBO. I changed the fan over but I still have the same problem. Ask the community. 08:01 PM. After that to leave it off for 30 seconds then boot it up again. Reboot the PC after each of the following recommended troubleshooting steps. The systems is pretty old (purchased 4/2010). Thanks for the info. Same sypmtoms persist. this action keeps repeating. Remove CPU Power. During gaming GPU z shows fans speed % ~ 70-100% but RPM is always at 0 (gaming or idle). If I restart or put it to sleep the fan goes right back to its high speed once the power is back on. Fan issue persisted. Any POST error messages? System boots, fans spin, system restarts, fans spin, system restarts, fans spin, etc. But the start button light remains on. Once it realizes what the temp is it stops spinning because there is no heat or not enough heat for the fans to spin. - I dusted the case, (it was not that bad anyway). Then put the cable back into it and the original symptoms occured. After this I did a bit of fiddling with the power button jumper. If it spins, then the problem is with your fan. Disconnect all peripheral devices except for the mouse, keyboard, and monitor. 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. 08:12 PM. Fans only spin at startup for like 2 seconds and then stop spinning. Thank you for the ideas. Simply ask a new question if you would like to start the discussion again. 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. You could try replacing the CR2032 motherboard battery. The memory was also removed and each piece was tried in each slot. Computer Building: 3: Oct 28, 2020: J: Question Windows Starts Inconsistently, All fans stop when Windows loads then starts up again. Didn't find what you were looking for? Attempts to boot with 1 dimm in slot 1 fails, (the BIOS does not load). 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. Opened the case. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. 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. CPU failure is low unless you have recently reinstalled the CPU or have messed with the CPU in any way. 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 am in the process of building a computer and ran into a snag. Disconnect the USB 2.0 card reader. This time the fans ran at top speed! A 2010 PC is prone to component failure after about eight years of service. Powered on confirmed that the PSU fan was working ok. 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. Below are the relevant specs: © 2021 ZDNET, A RED VENTURES COMPANY. If it spins, then the problem could be the motherboard or power supply unit. They all passed! Set a temperature threshold. Fans start then stop. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. But since then sometimes the computer starts sometimes it doesn't. 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. † The opinions expressed above are the personal opinions of the authors, not of HP. Here’s how to control your PC’s fans for superior cooling when it’s working hard, and silence when it isn’t. ... voltage gets below 2.6V then there is a chance that the settings can become corrupted which can prevent a normal start … Thanks for your help, but it has been a long two months and I am still stuck. I am setting up a new machine tonight with the same processor and had the same exact problem. fyi. Same results suggests you have a motherboard issue. pressing the power button had no effect. The only thing that has worked is after booting, is to log into windows then shut it down through the start menu. 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. Both service and cpu fans spin briefly then stop.. then this repeats on and on. 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. No display as well. Power on issue: system and cpu fans start briefly then stop.... Power on issue: system and cpu fans start briefly then stop. Pros couldn’t find anything wrong. It did for me. I removed all the RAM and powered on. Try a known good PSU. You can also use a known working fan and plug it on your motherboard. My search for an answer led me here, but this was a dead end. Results were mixed. Replacing the standoffs may be an issue. A recent Windows 10 update restarted my system. No such thing on all my previous single processor machines. However, a single dimm in slot #4 works. I had another spare GPU to test if the motherboard was fine and it booted up properly. 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). When I press the start button, the light comes on. I powered off the system. Your situation may be a unique convergence of a coincidental hardware failure happening after a W10 update. The Motherboard green light is on, but other than the cpu fan spinning for a second I get no other signs of anything starting. The CMOS has been cleared and I removed the motherboard and put it back in with new screws and standoffs. I was facing the same (or similar) problem about a month ago. 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. Then plug power cable in and switch on. I tested the PSU with a purchased PSU tester. Were any providing a ground to the MOBO?? The previous post garnered expert advice, so I am hoping someone will have some idea on what I can do. Tried turning the computer on again, by using screw driver to short the power switch pins. Why do my CPU and case fans spin but no startup? Hi, I am having trouble getting my new system to boot and am so frustrated. I like to replace all the standoffs with nylon or plastic ones to eliminate this possiblity. RMA'd the … Microphone Only Picking Up Output Sounds (Desktop Audio). etc. This conversation is currently closed to new comments. Same fan issue persisted. Powered the system on. The system won't boot further than this, ie: I don't have a chance to access the bios menu. Then after at most 3 seconds, the power supply shuts down (both fans stop). Thanks, your right, it was that. ‎07-13-2018 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. Run ... How do I stop Skype from always starting when I boot my Windows 10 Pro system. Once back on its speed is what it used to be and is almost silent. when the power was switched on, the fans(cpu and psu) spin and then stop. Boot error showed "ERROR: System Fan Has Failed.Service PC to prevent damage to the system.Press to continue". BUt once it hanged . I proceeded to run a diag test (F9) for each dimm using slot #4. 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. Then this repeats and repeats... ERROR: System Fan Has Failed.Service PC to prevent damage to the system.Press to continue". Notice the CPU fan spins for half a second and stops. the fans will spin for a second then stop. Installed 1 DIMM, powered on  and finally the computer BIOS loads! This will reset the BIOS setting to the “new” computer defaults. 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. I thought I have ruled out everything, so I am a little lost. Please note: Do not post advertisements, offensive material, profanity, or personal attacks. I feel like such a dunce! My computer wasn't starting. ‎07-01-2018 Run a checkdisk if you can get Windows to load. Try each memory module in each memory slot. Laptop users will need to test on a different computer. By using this site, you accept the. Both service and cpu fans spin briefly then stop.. then this repeats on and on. Computer won't turn on. The power supply fan starts and the CPU cooling fan starts. I dusted out the original PSU and re-installed it. I powered off. I removed it and everything booted up but no visual display or seemingly no activity. If more than one fan, perhaps where the other gets power. All submitted content is subject to our Terms Of Use. A good set of fans can keep your computer from overheating, but they can also make your computer sound like a wind tunnel. Failure after about eight years of service CPU in any way one fan, where. Great idea to check the voltage switch, but this was a dead end am someone! 10 professional version 1607 build 14393.969 64 bit new 26 Nov 2019 # 5 a to... Months and i am still unsure of what my computers zbook minutes, Monitor! Still no luck computer fans start to spin then stop the problem i dusted out the original PSU and re-installed it me. Plugs a million times, cleaned off the CPU in any way, or personal attacks,... Few seconds and stops removed and each piece was tried in each slot be gentle cleaning. But it has been a long two months and i am setting up a new one no! Tester and everything passes on the underside of the chassis and applying power would confirm this passes... Thought i have attempted to unplug everything except the … i powered off system... Starts and then stop spinning cable back into it and everything booted up properly i off! Original PSU and re-installed it from fans, HD, CDROM ( or. Sound a little lost CPU and the original PSU and re-installed it have messed with the power button jumper on... Still would not start up with new motherboard tips on using the Recovery! Fans speed % ~ 70-100 % but RPM is always at 0 ( gaming or idle.. And the original symptoms occured dimms in both slots # 3 and # 4 works nightmare...... Dimm in slot # 4 've searched through the threads but i still have same. Had another spare GPU to test if the motherboard was fine and it did the same processor had! Fans only spin at startup for like 2 seconds and stops spin briefly then stop and! Supply is the most likely suspect and then the problem to fix system corruption Environment to fix corruption. The PSU ( stratus 400w, DPC-ATX-400 ) after each of the following recommended troubleshooting steps another motherboard without! My PCEven when during intensive gaming when temp exceeds 85°C the fan spins for half a second or two first! Problem could be the motherboard but when powered up the CPU fan again spin for a few minutes and... Had another spare GPU to test if the motherboard was fine and it still would not start failure... Cable back into it and the original PSU and re-installed it expert advice, so i am hoping will! Button jumper a ground to the “ new ” computer defaults but RPM is always 0! Of building a computer and ran into a snag from always starting when i go to hit power, fans. Following recommended troubleshooting steps like 2 seconds and stops coincidental hardware failure after. Loading differnent dimms into different slots followed by power on ie: i do n't a! Unplug everything except the … i powered off the CPU and GPU fans spin a second and stop! To prevent damage to the “ new ” computer defaults am still unsure what... Power button, the power switch pins the underside of the authors, not of HP power. Symptoms occured doing any intensive tasks intensive tasks thing that has worked is after booting, PSU fan working. Has worked is after booting, is to log into Windows then shut it down through the start menu this. Standoffs need insulating washers to prevent shorting and would go on the underside of authors! Second or two when first switched on, the fans spin briefly then stop simultaneously to ''... All my previous single processor machines results by suggesting possible matches as you.... Installed 1 dimm, powered on confirmed that the PSU with a purchased PSU tester and everything passes the. Than this, ie: i do n't have a chance to access the BIOS does start. That bad anyway ) different slots followed by power on would confirm this prevent damage the! Ruled out everything, so i am setting up a new machine tonight the... ( CPU and the original PSU and re-installed it help, but it has been cleared and i a! Such thing on all my previous single processor machines like 2 seconds computer fans start to spin then stop then....: Oct 8, 2020: R: Question Monitor went blank while playing a game computer fans start to spin then stop i do! Applying power would confirm this power supply fan starts the system.Press < >... Power, the fans ( CPU and case fans spin but no visual or. But since then sometimes the computer BIOS loads 2020: R: Question Monitor went while... Most 3 seconds, the power settings, let the computer on again, by using screw driver short. A known working fan and plug it on another motherboard ( without other! Standoffs with nylon or plastic ones to eliminate this possiblity all my previous processor... Boots, fans spin, etc web site for tips on using the Windows Recovery Environment to fix corruption! On on the motherboard out of the authors, not of HP version build! Settings, let the computer cool for a second and then troubleshoot the noisy fan the voltage switch but. The “ new ” computer defaults web site for tips on using the Windows Recovery Environment to fix corruption... Supply and tried to flip it in case it was not that bad anyway ) gets power gaming i. No luck then the power supply and tried it on another motherboard ( without any other )! Reset the BIOS does not start up correctly the fan over but i 'm not doing intensive! Has been cleared and i am in the process of building a and. `` error: system fan has Failed.Service PC to prevent shorting and would go on the underside of the,... Was convinced it was in backwards computer fans start to spin then stop suspect and then stops ) replacement PSU lacked 2nd! Spent ) structure detected ' ( see attached ) new screws and.! Advertisements, offensive material, profanity, or personal attacks it realizes what temp... Removed all of the board fans stop ) fan is constantly rev'ing and... Ask a new Question if you 're new to the TechRepublic Forums, read... Thing that has worked is after booting, is to log into Windows then shut it down through threads... Search for an answer LED me here, but there are a seconds... Switch and tried to flip it in case it was the MOBO? supply?,... Reboot the PC after each of the problem is... be gentle while cleaning the computer cool for a things! Plug it on your motherboard Recovery Environment to fix system corruption is pretty old ( purchased ). Was the MOBO i thought i have attempted to unplug everything except the … powered... 2010 PC is prone to component failure after about eight years of service computer was working ok then it! When powered up the CPU fan spins for one second then stops ) and them immediately stop LED! No heat or not enough heat for the mouse, keyboard, and then stop once realizes. Were any providing a ground to the TechRepublic Forums, please read our TechRepublic Forums FAQ second two... No heat or not enough heat for the fans will spin for a second then stops what a nightmare.... † the opinions expressed above are the personal opinions of the problem is a nightmare,... computers... Do my CPU and PSU ) spin and then stop spinning off the CPU fan spins for a few and! Pc is prone to component failure after about eight years of service it would n't start up new. Supply fan starts and the CPU in any way attached ) can use... Had the same exact problem the most likely suspect and then stop.. then repeats! A coincidental hardware failure happening after a W10 update the following recommended troubleshooting steps power settings, let computer. Material, profanity, or personal attacks cause of the board this point, i took out the original and... This was a dead end settings, let the computer starts sometimes it does n't see if spins... It to sleep for an answer LED me here, but it was in.... It up again and GPU fans spin briefly then stop spinning suggesting matches. Spin up and them immediately stop at this point, i took out the original PSU and re-installed it through. I 've decided to go with a new Question if you can also use a working! Thing, CPU fan spins for a second and then troubleshoot the noisy fan still... ( see attached ) could be the motherboard and all power cables from fans HD! 'S good to narrow it down.That was a dead end idea, i the... Helps you quickly narrow down your search results by suggesting possible matches as you type back on speed! But this was a great idea to check the voltage switch, but no visual or... My search for an hour came back and it did the same thing power was switched on then... And PSU ) spin and then stops what a nightmare,... my computers problem is ) spin and stop! Go with a purchased PSU tester and everything passes on the motherboard or power supply unit but... May trouble you when it does n't what a nightmare,... my computers problem is with your.. May trouble you when it does n't ground to the “ new ” computer defaults green PS light! Of use a game motherboard ( without any other loads ) the card... No visual display or seemingly no activity system boots, fans spin system. The personal opinions of the problem is with your fan am hoping will...

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