Be descriptive. One day I was cleaning it my computer and turned it on with the window off. Tonight I notice that there is a noise from my PSU that I never heard before. Post relevant photos of build/parts here. Not too loud, but certainly audible from the inside of my case with the side panel on. then we strongly recommend that you Download (What happens when a PSU fan stops?) Both GPU and CPU temperatures are pretty cool. The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. Remove all connections from motherboard to hard drives and Blu-ray drive. I removed all the RAM and powered on. New comments cannot be posted and votes cannot be cast. It doesn't appear in any feeds, and anyone with a direct link to it will see a message like this one. This is the first time it happens and I don't have any experience with PSU. Why do my CPU and case fans spin but no startup? The case fan too. Here's mine: http://www.corsair.com/en-us/ax760-atx-power-supply-760-watt-80-plus-platinum-certified-fully-modular-psu. I have the AX 760. The sound is on for maybe 2 minutes, then stop for 4-5 minutes, then on for another 2 minutes. Press question mark to learn the rest of the keyboard shortcuts. This is the place to ask! Looks like you're using new Reddit on an old browser. Can you tell if the fan behaves differently under different loads (idle on desktop vs playing a graphically intensive game)? Build a PC What happens when a PSU fan stops? The sound is on for maybe 2 minutes, then stop for 4-5 minutes, then on for another 2 minutes. Planning on building a computer but need some advice? I replaced the onboard battery. If you really want to find out for sure, get one of those things that monitor wattage from the wall. Start your PC with essential hardware only. Thread starter Reachable; Start date Apr 18, ... it's usually straightforward) and the fan appeared to spin for a while and then apparently stopped. Builds: 2. Two weeks ago the PC would not turn on and figured it must be the PSU, so I replaced the original PSU with a Corsair CV450. I dusted out the original PSU and re-installed it. no, the sound doesn't come from GPU. I notice this sound right now when I'm not doing anything significant or taxing to the system. Turns out, my PSU fans never spins at all because I never hits the wattage to turn it on. If you have What happens when a PSU fan stops? Anyone have information on how to prevent the install from happening on start up? Press question mark to learn the rest of the keyboard shortcuts. etc. Provide any additional details you wish below. It might be because the PSU itself can't handle it anymore because it's low quality or it's short on wattage, or because the card is being restricted from receiving all the power it needs on Windows power settings or on GPU power settings. Many of Corsairs fans have zero RPM mode, and the thresholds for 'zero' are all across the board. You will see something of the same. I have tried unplugging the PSU and holding power for 30 seconds and that didn’t work. 20% of 750 is 150 watts. It's somewhat subtle, but my system is pretty quiet so I can pick it up, and beside it's different from normal sound that my system normally makes. Home PC won't start up with new motherboard. Describe your problem. What cause it? Hi, so I recently finished a PC build and I went to power it on the fans spun, but no startup. TIP: Click here now to repair Windows faults and optimize system speed. It freaked me out. Any other issues other than noise? The paperclip test is the act of shorting the two pins (ATX 16 and 17) to soft-activate the power supply. Upon booting, PSU fan and CPU fan again spin for a second and then stop simultaneously. If your computer turns on, and stays on, with essential hardware only, proceed to Step 10. Whatever causes it disappears on restart. When I power it on, the fans start, the green light on the back of the PSU lights up then the 3 & 4 LEDs on the front panel flash before the box turns itself off. It sounds like fan noise and it comes from the bottom of my PSU. The thing is that it doesn't make that noise all the time. 11 years ago In reply to Push start button, fan ru ... Hi Tyler, i have the same problem. If your computer continues to turn off by itself, proceed to Step 11. The thing is that it doesn't make that noise all the time. I hooked up a loopback and it just spins briefly and then stops. I have around 7 pcs with this problem. Last Post RSS MacFreekDotKext (@jatechnology) Eminent Member. Take a look at the tech specs tab. Also, I don't even know for sure if it's really fan sound. It sounds like it. Place it back in, fans spin a bit at the start then stop. 13 years ago In reply to Fans Spin then stop Thanks for your help, but it has been a long two months and I am still stuck. http://www.corsair.com/en-us/hx-series-hx750-power-supply-750-watt-80-plus-gold-certified-modular-psu. The chassis fans don't start, and the CPU and graphics card fans spin briefly and then stop. It is only loud because it is “calling for a lot of CPU’s”, I think that is what Cal said. Posts: 46. All worked well for 2 weeks. The replacement PSU lacked a 2nd 'P4 12v' connector for my video card (Radeon HD5770). System boots, fans spin, system restarts, fans spin, system restarts, fans spin, etc. June 9, 2018 5:15 am Hello, I am having a new issue with my AKiTIO Node. Close. Try a weaker video card or a stronger PSU. Re: Power Supply starts then stops after manual start up as far as I recall, green and black wires do not need to be connected. We use cookies to … Archived. 1. I did some investigating and saw what the answer was. New comments cannot be posted and votes cannot be cast. List any error messages and symptoms. Any help would be appreciated. All the case-fans, cpu heatsink fans are off. Consider formatting your parts list. Computer Building: 3: Oct 28, 2020: J: Question Windows Starts Inconsistently, All fans stop when Windows loads then starts up again. When I opened the PSU, the fan was, somehow, slightly detached from it's "regular" spot, and due to it being not in a fixed position, it was rapidly moving forward and back, and that was the source of the grinding noise. Second of all, the max +12v output that PSU can reliably do is 350-watts and each rail can effectively use only half of that(ish). Never give me any problem or whatsoever. List anything you've done in attempt to diagnose or fix the problem. Turned on the psu outside the case with a clip and it goes full power too. Powered on confirmed that the PSU fan was working ok. I think it's broken. I have no idea what to do. We put in a new PSU in it but still no booting. The PSU has 2 such connectors. Is it dangerous? If not, is the fan noise really noticeable, or just barely audible over other ambient noises? Some are at the low end like 20, some are at the high end like 70. If the PSU fan stops working, then its components can get overheated and may result in serious damage to the PSU components, and to your other components too in some cases. This is the place to ask! Generally a fan twitch means that the power supply has a fault and is shutting down for protection. The fans in PSU's are largely standard fans. Take a look for yourself. I don't know, because I never heard this noise before and normally when i play game, the sound of gaming drown out every other sound. Repair Tool. https://www.youtube.com/watch?v=_ktrLPg-6rA. My machine was on the floor. Posted by 2 years ago. Your PSU doesn't spin until it hits 20% of its total wattage. AKiTiO Node PSU fan starts, then stops, repeatedly until slowly starting and then spins fine? This will definitely affect your work, cost you money and will lead to mental stress because you don’t want to have a burnt PSU in the middle of your work. I have an OptiPlex 3010 which has decided not to start up. In fact it's on right now and my GPU isn't even running. Other than that, no problem at all. I mean not when its in operation or when its off. Question what do people think as a get started streaming gaming PC? reinstalled drivers, removed msi afterbuners, installed a ancient gt 640 (fans worked). Right now if the fan is loud when I start the computer, all I have to do is let the computer finish Start up, then I click Restart and when the computer restarts the fan is normal and quiet. Remove CPU Power. Anyone is welcome to seek the input of our helpful community as they piece together their desktop. Dead fan, a really common failure in power supplies. Now, the reason why the PSU stops powering the card is where the culprit hunt starts. Sorry, this post was deleted by the person who originally posted it. Fans only spin at startup for like 2 seconds and then stop spinning. PSU is a evga 750G+ supernova @1.5 years old. That's not enough to drive the 6950, in fact I think you're overdrawing on boot when the rig first starts up before the system can even get into idle. When the system is shutdown (but not powered off), the PSU fan spins for about 10 minutes. During gaming GPU z shows fans speed % ~ 70-100% but RPM is always at 0 (gaming or idle). Was convinced it was the mobo so we bought a new one. On Boot CPU fan Spins then Stops, Computer starts as normal by AwesomeAndy Mar 16, 2005 4:15AM PST I am running an AMD Athlon at 1 gig on an Asus A7V Mobo. I've seen it all. If the PSU is still under warranty (can vary from 1 to 7 years depending on manufacturer) then get it replaced. Is there anything I can do? And just to be sure, is the sound not just from the HDD vibrations affecting the case? In the end the problem was something totally different then we thought. I have used this machine for a little more than 2 years. Joined: 3 years ago. It sounds like fan noise and it comes from the bottom of my PSU. PSU fan spins briefly then stops. Tried both bioses, both were flashed successfully when i got the card from a miner. I have returned the CPU and the Motherboard, both are new. Help Now, take a look at any of their various PSU's. /r/buildapc is a community-driven subreddit dedicated to custom PC assembly. CPU fan starts then stops - posted in Hardware, Components and Peripherals: Hello, I am building a new PC, and having issues. the fans start pulsing every few seconds) and nothing else happens - … With one of them the PSU fan starts to spin without booting the system (just powered on) /r/buildapc is a community-driven subreddit dedicated to custom PC assembly. What is your parts list? Remove all power to hard drives and Blu-ray drive. 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 see the fan wasn't spinning at all. Does it sound like that? Just sitting here web browsing and the fan turns 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. A short video showing how a PWM fan controller can mess with a non PWM fan. Bought a PSU tester and everything passes on the PSU. Same behavior. How to fix a fast spinning PSU fan Clean out the dust . So connect them for less then a second (literally touch) and then … Full repairs starting at $19.95. Tonight I notice that there is a noise from my PSU that I never heard before. Page 1 of 2 - Fans spin for half second when cpu is installed. Everything else works fine in my PCEven when during intensive gaming when temp exceeds 85°C the fan won’t spin. Fan issue persisted. Send it to EVGA for repair or replacement. Power Supply starts then stops - posted in Internal Hardware: It rained last week and I got some water in my basement. Are you sure it's not just part of the "Zero RPM" feature where the PSU stops the fan under low temps? What actually starts the PSU, is a short pulse on the wire. It's zero RPM until 70% of load, which is 532 watts. The PSU fan speed is related to the power consumption and temperature, the more power you use or draw and the warmer the PSU gets the faster your PSU fan will be. Anyone is welcome to seek the input of our helpful community as they piece together their desktop. I'm 100% sure the noise come from the PSU because I literally pull the side panel and listen to it to make sure it comes from the PSU. Computer Building: 1: Oct 8, 2020: R: Question Monitor went blank while playing a game. As foon as the pc starts up the fans start going full power and never stop. My acer aspire laptop turns on the fan starts for a few seconds then stops and i get nothing please help - Answered by a verified Tech Support Specialist. Press J to jump to the feed. PSU fan spins briefly then stops. - posted in System Building and Upgrading: Hi, Im bulding a new computer and have run into some trouble getting it to boot. Do understand that opening the PSU is 1. dangerous, those capacitors can carry a hell of a shock, and 2. breaks any and all warranty. Otherwise, I wouldn't worry too much about it. etc. So this desktop died on us. (Other of the same type don't do this) Also when I use another psu in that case the case fan runs normal. The graphic card XFX GTS 250 512Mb is powered with a 6pin connector. Same fan issue persisted. With that PSU I don't think there's a fan off mode. The problem follows the psu. Planning on building a computer but need some advice? Suddenly, today, when I turn on the PC the fans start, then stop then start (i.e. The purpose here is to remove as much hardware as possible while still maintaining your computer's ability to power on. Fan Noise. Atx 16 and 17 ) to soft-activate the power supply R: Monitor! Psu outside the case with the side panel on and everything passes on the PSU fan stops? never at. Now, take a look at any of their various PSU 's week I! 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