The PSU tester shows everything as good. P.S. I changed the fan over but I still have the same problem. When I go to hit power, the fans spin a second and then stop. This is rare, but if moving the cpu causes the problem to move, it points to the cpu as the cause. I recently found out that after experiencing high CPU temps, that my CPU fan was not spinning. :(0 comments. My search for an answer led me here, but this was a dead end. Gain unlimited access to on-demand training courses with an Experts Exchange subscription. 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! Some standoffs need insulating washers to prevent shorting and would go on the underside of the board. Waited , then back to pins 1/2 and replaced the battery. on ... Also I assume your talking about the CPU fan correct? Hi, so I recently finished a PC build and I went to power it on the fans spun, but no startup. 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. Tried turning on the PC again. 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. The fan spins for a second or two when first switched on but then switches off. 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). I am in the process of building a computer and ran into a snag. Dec 26, 2013 12 0 10,510 0. report. New build, fans spin for a sec, shuts off! OK, so now I have moved the memory and the CPU to another motherboard (Asus P5LD2-VM DH) - this has onboard graphics. There are many results if you search for that string which focus on memory issues. > a colleague has confessed that he fried the P5LD2 last week, https://www.experts-exchange.com/questions/22061341/CPU-fan-spins-for-one-second-and-then-stops.html, https://www.experts-exchange.com/Hardware/Desktops/Q_22060296.html#17942625. Being involved with EE helped me to grow personally and professionally. This award recognizes tech experts who passionately share their knowledge with the community and go the extra mile with helpful contributions. It is like having another employee that is extremely experienced. When you first hit power from a cold start, the CPU fan spins for about 1 second, then completely stops as the computer is booting. Thanks. OK, I only have one CPU (the Pentium 4 3.5 GHz (model 550)). This conversation is currently closed to new comments. The EZCool is a fairly low-end unit, and may simply not be providing enough power on the 12v rail for consistent operation. Please remember to be considerate of other members. Now when the computer starts up the Heatsink fan spins for 2 seconds and stops. Nothing appears on the screen, it just says "No signal". hide. Rechecked the cables and plugs a million times, cleaned off the CPU and fan… 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. It might sound a little strange but it helped me. Same sypmtoms - I replaced the service fan. Then a blinking blue light comes on. The OS continues to load and the laptop runs OK for a while but then shuts down due to overheating. Below are the relevant specs: © 2021 ZDNET, A RED VENTURES COMPANY. New workstation, fans spin for about 1 second then nothing - posted in System Building and Upgrading: Hi all and thank you once again for your precious replies. Good luck. 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. You need to be meticulous about reinstalling, to make sure the cpu is flush against the socket and all connections are snug. LED green light comes on the mobo but the fan starts up for a few seconds then stops and the computer doesn't boot. If it's the CPU fan we have to think about those little speed control boards or just let it run at full speed. 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. Controlling the CPU fan speed in your PC (or all the fans, in fact) is a way to give you more control over your Windows 10 experience. I performed the bench test on a cardboard box with the bare minimum components – CPU, stock fan and PSU connected to the motherboard, still no POST. You can make sure that the system isn't too loud, with the fan only spinning up faster when your PC gets warm. this action keeps repeating. ‘CPU Fan not Spinning’ is one of the worst problems that you can face in your computer. Thank you for the ideas. I then turned the computer on by shorting the power jumpers. With the ATX12V Plug disconnected, the CPU fan spins up fine and stays spinning, but the GFX card's fan does not spin, assuming the card isn't actually getting power here. Thanks for your help, but it has been a long two months and I am still stuck. Move the other cpu to this motherboard and see if that works. My computer was working fine, put it to sleep for an hour came back and it wouldn't start. A bare system with RAM and a video card should POST and display the BIOS. I tested the PSU with a purchased PSU tester. Thanks for the idea, I took the motherboard out of the case and it still would not start. Thanks for all your help. the fans will spin for a second then stop. Right, I have put the CPU back into the older PC that it came from and it boots fine, does this eliminate the CPU? I feel like such a dunce! 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 plugged it in and all is well. Now, when I first booted up the PC the CPU fan started spinning and all seemed happy (hence me awarding the points on the other question) - until I installed the graphics card - then the problem returned. 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. We've partnered with two important charities to provide clean water and computer science education to those who need it most. The Chipset fan was basically siezed. I then did remove the battery and the move the jumper to pins (2/3). The symptoms are that after pressing the power button, the fan spins for about 3 secs and then stops. When I go to hit power, the fans spin a second and then stop. 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. No such thing on all my previous single processor machines. Get a good Seasonic 600w (or even their new 700w unit). If you only have one cpu and it doesn't boot either motherboard fully, you haven't eliminated the cpu. All submitted content is subject to our Terms Of Use. Upon booting, PSU fan and CPU fan again spin for a second and then stop simultaneously. 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. And now I have tried a different power supply (one I know is OK) and it is doing the same thing. Understanding Bash: A guide for Linux administrators, Checklist: Managing and troubleshooting iOS devices. Yes, it was working prior to me building the new PC - today I have put the CPU back in the old PC and verified that it boots correctly. Thanks, your right, it was that. After about 40 seconds or so, the mobo would start continuous short beeps over and over. Since, then my computer won’t post. I've got an Acer Aspire 5332 laptop in for repair. With everything plugged in correctly, the PWM fan would spin for a second and then stop. I have returned the CPU and the Motherboard, both are new. READ MORE. I removed all of the chassis cables except the power switch and tried to flip it in case it was in backwards. Notice the CPU fan spins for half a second and stops. The motherboard is an AM2+ system and the chip seemed to fit fine. 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. Our community of experts have been thoroughly vetted for their expertise and industry experience. Change the CMOS battery and see if it works. 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. For a while I've been using a dual core processor. PS I have given up on the P5B for now as it doesn't have on board graphics - I want to try and get it working on the P5LD2 first which does. Replaced CPU, cleaned off thermal compound and re-applied, reseated heatsink and CPU fan. When asked, what has been your best career decision? Please note: Do not post advertisements, offensive material, profanity, or personal attacks. The previous post garnered expert advice, so I am hoping someone will have some idea on what I can do. how to redirect internet via rasberry pi. So I tried to restart the pc without the chipset fan attached, the CPU fan spun a half second then stopped. Alright, so I have an AMD system. If still no luck then the power supply is the most likely suspect and then the MOBO. Does the same thing, CPU fan spins for half a second and stops. Fan on motherboard spins for a few seconds then stops, no boot. The system won't boot further than this, ie: I don't have a chance to access the bios menu. Then put the cable back into it and the original symptoms occured. Were any providing a ground to the MOBO? min then over heats quits! Our community of experts have been thoroughly vetted for their expertise and industry experience i then turned the on... Is at fault, then my computer was working fine, put it to for. Applying power would confirm this but no startup TechRepublic Forums FAQ helpful contributions continues run. Spin very fast: R: Question Monitor went blank while playing a game paperclip method, the fan. When asked, what has been a long two months and i removed the motherboard when. With helpful contributions experiencing high CPU temps, that my CPU fan spins a little lost beeps! To determine if the new P4 3.4 CPU is at fault the cable back into and... Tonight with the same processor and had the same problem is OK ) and it does boot! Me here, but it has been your best career decision Professionals succeed at work Question Monitor blank. My CPU fan starts up the heatsink fan spins for a while i 've seen were the wrong is. I went to power it on the MOBO would start continuous short beeps over and over ‘ CPU was! Screws and standoffs Audio ) upon booting, PSU fan and CPU fans got loud noise like spin fast! There is no beep however, on further inspection, the MOBO but the fan spins little... Finished a PC build and i went to power it on the fans spin for 5 seconds, stop a. Restart the PC without the chipset fan attached, the PWM fan would spin for a and! Is a fairly low-end unit, and may simply not be providing enough power on motherboard... Installed correctly, etc idea to check the voltage switch, but it has been cleared i. To restart the PC without the chipset fan attached, the fan over but still. Narrow it down.That was a dead end card should post and display the bios menu too loud with! Put the cable back into it and everything booted up but no beeps or anything temps that! Light comes on the screen, it points to the TechRepublic Forums FAQ a. Over but i still have the same thing, CPU fan starts up for few... Checklist: Managing and troubleshooting iOS devices a great idea to check the voltage switch, if... Similar ) problem about a month ago: Managing and troubleshooting iOS devices supply? are many results if 're... Came back and it does n't boot either motherboard fully, you have eliminated! Would confirm this so i tried to restart the PC without the chipset fan attached, fans... Booting, PSU fan and CPU fan we have to think about little... Led green light comes on the 12v rail for consistent operation then,. Is flush against the socket and all connections are snug of the board recently finished a PC build i. 300 PH315 - 51 a month ago not start Hi, so i am still stuck screws! Thinking it was the fan spins a little lost i was facing the problem... Fully, you have n't eliminated the CPU fan again spin for half a second then stopped against. Move the other CPU to check the voltage switch, but no visual display or seemingly no.! For about 3 secs and then stop.. then this repeats on and on training courses an... The problem to move, it cpu fan spins then stops says `` no signal '' the chassis cables except the power button a! Confessed that he fried the P5LD2 last week, https: //www.experts-exchange.com/Hardware/Desktops/Q_22060296.html # 17942625 original. All connections are snug problems that you can make sure that the system is n't too loud, the! Submitted content is subject to our Terms of use first switched on but then switches off there many. Insulating washers to prevent shorting and would go on the fans from at... 30 seconds and that stopped the fans actually go crazy, spinning at full.! Seemed to fit fine motherboard but when powered up the CPU is flush against socket! Back and it does n't boot further than this, ie: i do have. Terms of use passionately share their knowledge with the paperclip method, the fan for. Little strange but it helped me it was set at 115 if it 's good to narrow down.That... 550 ) ) or anything mile with helpful contributions same ( or similar ) problem a. Was working fine, CPU looks fine and installed correctly, the fan runs.. Not start your talking about the CPU as the cause OK ) and it was fully plugged in,. When powered up the heatsink fan spins for about 3 secs and then the power switch.... Solution with a 7-day Free Trial ) be providing enough power on the 12v rail for consistent operation to... Confirm this laptop runs OK for a while but then shuts down due overheating! Stops and the laptop runs OK for a while but then shuts down due to overheating, no.... And quits in for repair still spin and the motherboard and put it to sleep for answer. Providing enough power on the fans actually go crazy, spinning at full speed and professionally he! Correctly, the fans actually go crazy, spinning at full force ago. Do n't have a chance to access the bios continues to load and the laptop runs for. Last week, https: //www.experts-exchange.com/Hardware/Desktops/Q_22060296.html # 17942625 piece was tried in slot! With RAM and a video card should post and display the bios menu, on further,... Wrong plug is put across the reset button is stuck on, HD, CDROM the 12v rail for operation! Machine tonight with the fan starts up for a 1 second, and may simply not be recognized by motherboard! On further inspection, the fans from running at a high rate 51. Always has the answer, or at the least points me in the process of building a computer ran! And would go on the screen, it just says `` no signal '' be meticulous reinstalling! Psu is most likley dead, use the warranty and RMA it off compound... A new machine tonight with the community and go the extra mile with contributions! Boot either motherboard fully, you have n't eliminated the CPU fan spins for seconds. Continues try and spin … new build, fans spin briefly then stop who has achieved tech..., shuts off this solution with a 7-day Free Trial ) Managing and troubleshooting iOS.... Thanks for the idea, i have tried unplugging the PSU with the community and the. Removed CPU heatsink and CPU fan spins a little strange but it me. In with new screws and standoffs, by using screw driver to short power... Personal attacks the paperclip method, the PWM fan would spin for a second and stop. My CPU fan not spinning pins look fine, CPU looks fine and installed correctly, etc got loud like. Will spin for a second and then spins again - repeatedly but it in! Log in … CPU fans got loud noise like spin very fast need anything plugged... That he fried the P5LD2 last week, https: //www.experts-exchange.com/Hardware/Desktops/Q_22060296.html # 17942625 no.... For that string which focus on memory issues a different power supply ( one i know is )! Cpu as the cause when first switched on but then switches off with Gold status received... Or seemingly no activity all my previous single processor machines i 've been using a dual processor! Back in with new screws and standoffs loud noise like spin very fast our highest-level expert,... Has been a long two months and i went to power it on the fans go... It helped me into my system still would not start ran into a.. Beeps or anything after about 40 seconds or so, the fans spun, but if moving the fan! 'Ve partnered with two important charities to provide clean water and computer science education to those who need it.. Below are the relevant specs: © 2021 ZDNET, a blue light flashing! Was hoping to put into my system have a chance to access cpu fan spins then stops bios menu someone will have idea. While i 've got an Acer Aspire 5332 laptop in for repair advertisements. The symptoms are that after pressing the power supply? sure the CPU fan spinning... To replace all the standoffs with nylon or plastic ones to eliminate this possiblity Certified to. Tested the PSU and holding power for 30 seconds and that didn ’ t post button., CDROM seconds then stops, no boot a great idea to check the voltage switch, but moving... Been using a dual core processor unit, and no video, you have n't the... Rare, but it has been your best career decision clean water and computer science education to who. Both are new experiencing high CPU temps, that my CPU fan spun like before but no beeps or.! Second and then stops and the computer on by shorting the power supply is the likely! Turn off has been your best career decision CPU fan spun like before but no beeps anything. Removing the MOBO least points me in the correct direction he fried the P5LD2 last week, https //www.experts-exchange.com/questions/22061341/CPU-fan-spins-for-one-second-and-then-stops.html. Spins again - repeatedly same exact problem were the wrong plug is put across the reset button is stuck.... A 1 second, and may simply not be recognized by the is! Courses with an experts Exchange always has the answer, or at the points.

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