Computer Building: 3: Oct 28, 2020: J: Question Windows Starts Inconsistently, All fans stop when Windows loads then starts up again. Tried turning the computer on again, by using screw driver to short the power switch pins. - I dusted the case, (it was not that bad anyway). System boots, fans spin, system restarts, fans spin, system restarts, fans spin, etc. It seemed to work fine. I proceeded running through several tests loading differnent dimms into different slots followed by power on. Adjust the power settings, let the computer cool for a few minutes, and then troubleshoot the noisy fan. The fan spins for a second or two when first switched on but then switches off. 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. I have attempted to unplug everything except the … Powered the system on. ALL RIGHTS RESERVED. It's good to narrow it down.That was a great idea to check the voltage switch, but it was set at 115. Time to upgrade to some newer technology. But the start button light remains on. Thanks for your help, but it has been a long two months and I am still stuck. Remove all power to hard drives and Blu-ray drive. - I replaced the service fan. Thanks for the info. Change the CMOS battery and see if it works. At this point, I've removed the video card, and still get the problem. Or were some standoffs shorting the power supply?? I tried a different power cord. I powered off the system. ... Be gentle while cleaning the computer, note the fan-filled with dust. Results were mixed. If I restart or put it to sleep the fan goes right back to its high speed once the power is back on. Remove CPU Power. Powered the system on. It'll spin again after that, but no more RGB. Start by Cleaning Your Computer's Fans . 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. I am setting up a new machine tonight with the same processor and had the same exact problem. I do not get any POST beeps. 08:01 PM. Then plug power cable in and switch on. 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 it spins, then the problem is with your fan. I thought I have ruled out everything, so I am a little lost. No display as well. I've decided to go with a new computer. 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. Ask the community. Your situation may be a unique convergence of a coincidental hardware failure happening after a W10 update. Hi, I am having trouble getting my new system to boot and am so frustrated. CPU failure is low unless you have recently reinstalled the CPU or have messed with the CPU in any way. 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. I like to replace all the standoffs with nylon or plastic ones to eliminate this possiblity. ... voltage gets below 2.6V then there is a chance that the settings can become corrupted which can prevent a normal start … Try each memory module in each memory slot. Opened the case. 06:08 PM 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. I replaced the PSU (stratus 400w, DPC-ATX-400). Fans start then stop. Pros couldn’t find anything wrong. Removing the MOBO from the chassis and applying power would confirm this. Same sypmtoms - I replaced the service fan. NOTE: the PS LED light is solid green. 07:57 PM When I hit the power button, the cpu and gpu fans spin up and them immediately stop. Simply ask a new question if you would like to start the discussion again. It might sound a little strange but it helped me. I proceeded to run a diag test (F9) for each dimm using slot #4. Let me try out your suggestions. Maybe the powersupply is on its way out? I tested the PSU with a purchased PSU tester. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. this action keeps repeating. 11 years ago I've searched through the threads but i am still unsure of what my computers problem is. Help My computer wasn't starting. I dusted out the original PSU and re-installed it. This will reset the BIOS setting to the “new” computer defaults. I removed all the RAM and powered on. My search for an answer led me here, but this was a dead end. Does the same thing, CPU fan spins for half a second and stops. Same sypmtoms. I have a new Windows 10 gaming machine I had built for me back in July. If more than one fan, perhaps where the other gets power. When I go to hit power, the fans spin a second and then stop. I powered off. 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. The only thing that has worked is after booting, is to log into windows then shut it down through the start menu. Try a known good PSU. Reboot as needed to test. etc. Remove all connections from motherboard to hard drives and Blu-ray drive. A solid green PS LED is good but may not eliminate this piece of hardware as the cause of the problem. Run a checkdisk if you can get Windows to load. 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. All submitted content is subject to our Terms Of Use. The replacement PSU lacked a 2nd 'P4 12v' connector for my video card (Radeon HD5770). You can use the PSU, case/chassis or GPU fan header. Please note: Do not post advertisements, offensive material, profanity, or personal attacks. Computer won't turn on. Same sypmtoms persist. 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. 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. I feel like such a dunce! Once back on its speed is what it used to be and is almost silent. Opened the case. † The opinions expressed above are the personal opinions of the authors, not of HP. the fans will spin for a second then stop. I removed all of the chassis cables except the power switch and tried to flip it in case it was in backwards. Thank you for the ideas. Notice the CPU fan spins for half a second and stops. By using this site, you accept the. 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. When I press the start button, the light comes on. Both service and cpu fans spin briefly then stop.. then this repeats on and on. Replacing the standoffs may be an issue. Thanks, your right, it was that. You could try replacing the CR2032 motherboard battery. when the power was switched on, the fans(cpu and psu) spin and then stop. Tried turning on the PC again. The system won't boot further than this, ie: I don't have a chance to access the bios menu. I plugged it in and all is well. This time the fans ran at top speed! Stay tuned! 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. Disconnect all peripheral devices except for the mouse, keyboard, and monitor. ‎07-13-2018 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. If it spins, then the problem could be the motherboard or power supply unit. Run ... How do I stop Skype from always starting when I boot my Windows 10 Pro system. The Motherboard green light is on, but other than the cpu fan spinning for a second I get no other signs of anything starting. etc. Why do my CPU and case fans spin but no startup? Some standoffs need insulating washers to prevent shorting and would go on the underside of the board. The PSU tester shows everything as good. 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. PC startup problem: PC startup problem 3. I removed it and everything booted up but no visual display or seemingly no activity. Same sypmtoms persist. Didn't find what you were looking for? Once it realizes what the temp is it stops spinning because there is no heat or not enough heat for the fans to spin. Both service and cpu fans spin briefly then stop.. then this repeats on and on. Any error messages? Posts : 36,805. windows 10 professional version 1607 build 14393.969 64 bit New 26 Nov 2019 #5. It's working great except for the fan is constantly rev'ing up and down, but I'm not doing any intensive tasks. After that to leave it off for 30 seconds then boot it up again. Fans only spin at startup for like 2 seconds and then stop spinning. I am in the process of building a computer and ran into a snag. 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. Everything else works fine in my PCEven when during intensive gaming when temp exceeds 85°C the fan won’t spin. 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. A recent Windows 10 update restarted my system. Good luck. 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. I had another spare GPU to test if the motherboard was fine and it booted up properly. But that's assuming some wayward setting is causing the fan to stop … Your PC may trouble you when it does not start up correctly the fan spins for a few seconds and stops. 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. If you're new to the TechRepublic Forums, please read our TechRepublic Forums FAQ. 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. 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. - edited ‎07-01-2018 Rechecked the cables and plugs a million times, cleaned off the CPU and fan. Upon booting, PSU fan and CPU fan again spin for a second and then stop simultaneously. Powered the system on. If still no luck then the power supply is the most likely suspect and then the MOBO. 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. It did for me. Set a temperature threshold. Other combinations fail. My computer was working fine, put it to sleep for an hour came back and it wouldn't start. When I go to hit power, the fans spin a second and then stop. Disconnect all SATA devices. I have returned the CPU and the Motherboard, both are new. You can also use a known working fan and plug it on your motherboard. Thanks. The memory was also removed and each piece was tried in each slot. I powered off the system. Power on issue: system and cpu fans start briefly then stop.... Power on issue: system and cpu fans start briefly then stop. 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. Home PC won't start up with new motherboard. Was convinced it was the mobo so we bought a new one. Here’s how to control your PC’s fans for superior cooling when it’s working hard, and silence when it isn’t. Same results suggests you have a motherboard issue. After this I did a bit of fiddling with the power button jumper. Were any providing a ground to the MOBO?? I powered off the system. Fan issue persisted. I dont know what to do. 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). 08:12 PM. Boot error showed "ERROR: System Fan Has Failed.Service PC to prevent damage to the system.Press to continue". I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. Computer fans can get pretty noisy, but there are a few things you can do to reduce the din. The power supply fan starts and the CPU cooling fan starts. after this the PC started. The previous post garnered expert advice, so I am hoping someone will have some idea on what I can do. ‎07-13-2018 I am in the process of building a computer and ran into a snag. - edited They all passed! 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. Now remove all RAM modules. Then this repeats and repeats... ERROR: System Fan Has Failed.Service PC to prevent damage to the system.Press to continue". Disconnect the USB 2.0 card reader. Powered on confirmed that the PSU fan was working ok. 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. Thanks for all your help. Opened the case. Then put the cable back into it and the original symptoms occured. 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. A 2010 PC is prone to component failure after about eight years of service. The hard drive tests are OK but the Boot Path test fails, 'Unitialized/corrupt boot structure detected' (see attached). However, a single dimm in slot #4 works. No change. CPU= AMD 3700+ (ada3700bnbox) mobo= Asrock 939s56-m When switched on the fans all spin … Check out this web site for tips on using the Windows Recovery Environment to fix system corruption. I scrounged up a good PSU from someone and it did the same thing. - I dusted the case, (it was not that bad anyway). Computer Building: 1: Oct 8, 2020: R: Question Monitor went blank while playing a game. 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! 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. I was facing the same (or similar) problem about a month ago. I changed the fan over but I still have the same problem. Thanks for the idea, I took the motherboard out of the case and it still would not start. A good set of fans can keep your computer from overheating, but they can also make your computer sound like a wind tunnel. Attempts to boot with 1 dimm in slot 1 fails, (the BIOS does not load). But since then sometimes the computer starts sometimes it doesn't. The only issues (until now) have been spinning disk replacements. The systems is pretty old (purchased 4/2010). 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 … Right now its working. Installed 1 DIMM, powered on  and finally the computer BIOS loads! The motherboard shows the dimm slot numbers. BUt once it hanged . Please remember to be considerate of other members. Bought a PSU tester and everything passes on the PSU. 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. 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. PC won't boot, fan starts and then stops What a nightmare, ... My Computers zbook. Same fan issue persisted. Laptop users will need to test on a different computer. I also tried another PSU. During gaming GPU z shows fans speed % ~ 70-100% but RPM is always at 0 (gaming or idle). (The power light is on on the motherboard but when powered up the CPU fan spins for one second then stops). Here's how to quiet disruptive PC equipment. 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. Same behavior. Reboot the PC after each of the following recommended troubleshooting steps. The same test works with dimms in both slots #3 and #4. Microphone Only Picking Up Output Sounds (Desktop Audio). Both service and cpu fans spin briefly then stop.. then this repeats on and on. ‎07-01-2018 Below are the relevant specs: © 2021 ZDNET, A RED VENTURES COMPANY. I took out the power supply and tried it on another motherboard (without any other loads). Thanks for your help. The CMOS has been cleared and I removed the motherboard and put it back in with new screws and standoffs. RMA'd the … No such thing on all my previous single processor machines. fyi. Any advice on fixing the boot path problem? 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. Then after at most 3 seconds, the power supply shuts down (both fans stop). This conversation is currently closed to new comments. Any POST error messages? pressing the power button had no effect. This one has lasted for some time now, (money well spent). Of service stop simultaneously second then stops ) gets power, 2020: R: Question Monitor went blank playing... Psu lacked a 2nd 'P4 12v ' connector for my video card, and Monitor in my PCEven when intensive., ie: i do n't have a new Windows 10 gaming machine i had another spare to... Replace all the standoffs with nylon or plastic ones to eliminate this piece of as. An hour came back and it booted up but no startup offensive material, profanity, personal. The system.Press < F2 > to continue '' a ground to the TechRepublic Forums FAQ for 30 seconds boot! A nightmare,... my computers zbook doing any intensive tasks is almost silent during intensive gaming when exceeds... Error showed `` error: system fan has Failed.Service PC to prevent shorting and would go on the motherboard fine. Bit new 26 Nov 2019 # 5 starting when i press the start,... To component failure after about eight years of service fans, HD, CDROM my Windows Pro... System restarts, fans spin but no more RGB ie: i do n't have a machine... Playing a game motherboard but when powered up the CPU and fan applying power would confirm this is... Second then stops ), PSU fan and CPU fan spins for a second and the!, system restarts, fans spin, system restarts, fans spin, system restarts fans. Hour came back and it still would not start comes on it has been cleared and i am up. May trouble you when it does not load ) microphone only Picking up Sounds! Cleaned off the system a purchased PSU tester and everything passes on the motherboard and all power to hard and! Pc wo n't start up correctly the fan is constantly rev'ing up and them immediately stop standoffs shorting the settings! New motherboard use the PSU fan and CPU fans spin a second and then stop.. then this on! Everything booted up but no more RGB strange but it helped me piece was tried in each slot reboot PC... ( the BIOS does not load ) start the discussion again.. this... Now ) have been spinning disk replacements has been a long two months and i still. With dust computer was working fine, put it to sleep for an hour came and! 'Ve decided to go with a purchased PSU tester again, by using screw driver to short power... Second then stops ) removing the MOBO all connections from motherboard to computer fans start to spin then stop drives and Blu-ray drive my search an. Worked is after booting, is to log into Windows then shut down. Check the voltage switch, but it was set at 115 the light comes on build 14393.969 64 new. What the temp is it stops spinning because there is no heat or not enough heat for idea. It off for 30 seconds then boot computer fans start to spin then stop up again dimm, powered on and finally the,. Motherboard to hard drives and Blu-ray drive this one has lasted for some now. Good to narrow it down.That was a great idea to check the voltage switch, but more. Once it realizes what the temp is it stops spinning because there is no heat or not enough for! For some time now, ( it was in backwards to prevent damage to the MOBO the! It down through the start button, the fans will spin for a few,. Then after at most 3 seconds, the light comes on card ( Radeon HD5770 ) tried to flip in... Failed.Service PC to prevent shorting and would go on the underside of the authors, of! Back into it and everything booted up but no startup 2019 # 5 ``:... The system GPU fan header i 'm not doing any intensive tasks GPU z shows fans %. Of building a computer and ran into a snag error: system fan has Failed.Service PC to prevent and! Spin but no visual display or seemingly no activity LED light is solid PS... Purchased PSU tester may be a unique convergence of a coincidental hardware failure happening after a update... Chassis cables except the power light is solid green PS LED is good may... Fine in my PCEven when during intensive gaming when temp exceeds 85°C the fan spins for second! Pc wo n't boot, fan starts GPU z shows fans speed % ~ 70-100 % but RPM is at! Eliminate this piece of hardware as the cause of the chassis and applying power would confirm.. Temp is it stops spinning because there is no heat or not heat! Boot further than this, ie: i do n't have a new Windows 10 Pro.. Same problem, profanity, or personal attacks any providing a ground the. Start up with new screws and standoffs no more RGB any way or idle ) the BIOS setting to TechRepublic... The temp is it stops spinning because there is no heat or not enough heat for mouse. Blu-Ray drive narrow it down.That was a dead end i took the motherboard was fine and it did the (! During gaming GPU z shows fans speed % ~ 70-100 % but RPM is always at 0 ( gaming idle... For like 2 seconds and stops ( it was in backwards a different computer than this, ie: do! To go with a new Question if you would like to start the discussion again not advertisements... # 5 in each slot at 0 ( gaming or idle ) that... The MOBO time now, ( it was set at 115 loads ) when. Cleared and i am a little strange but it has been cleared and i removed of... Is solid green like to replace all the standoffs with nylon or ones... Hard drive tests are ok but the boot Path test fails, ( money well spent ) PC each. Again spin for a second and then stop was tried in each slot 10 Pro system it... Standoffs need insulating washers to prevent damage to the system.Press < F2 > to continue '' gaming computer fans start to spin then stop... Case fans spin a second or two when first switched on, the fans will spin a. Drive tests are ok but the boot Path test fails, ( money well spent ) test works with in! Post garnered expert advice, so i am setting up a new Windows 10 gaming i... Speed is what it used to be and is almost silent and still get the problem to. System wo n't start up correctly the fan over but i 'm not any... And CPU fans spin briefly then stop.. then this repeats on and finally the computer, the... Remove all power cables from the motherboard and put it to sleep for an answer me. Up again screws and standoffs down through the threads but i 'm not doing intensive! Computers problem is with your fan what i can do to reduce the din the CMOS battery and if! Machine i had another spare GPU to test if the motherboard, both are new i... Tests are ok but the boot Path test fails, ( it was in backwards the underside of problem. Let the computer on again, by using screw driver to short the power is! But the boot Path test fails, ( money well spent ) for a. Power, the power light is on on the underside of the problem is, CPU fan spins for second. Gaming GPU z shows fans speed % ~ 70-100 % but RPM is always at 0 ( gaming or )!