2,250 Views. CPU fan turns only for 5 seconds!! A friend has asked me to look at his computer, and i'm just looking to clarify something. Shuts right back off. PC boots up fine but after like 10 seconds it turns off, just after the CPU fan gets louder/faster. ... the fan for the CPU is not turning (or turning fast enough) 2) ... pc's only usally turn off when the fans are not running properly or they are not conected make sure they are ok! motherboard. The cpu I replaced was an i5 7600k and the cpu I replaced it with is an i5 9400f. Ram: 1x 8gb hyperx fury ddr4 I tried plugging in the battery (i normally use it without) and noticed it starts up fine but whenever i try to go into the setup (pressing F2) this error message appears: "AC adapter is not acer adapter." If the F_PANEL power button pins are shorted permanently, the system turns off. I turn it on for the first time, fans and led lights go on for about 5-10 seconds then shuts off without anything showing up on the monitor. How do I know for sure if it's the PSU or motherboard or what? So, thinking hurricane sandy caused a power surge, I bought a new PSU, and new memory, and a replacment MB just in case the first one was a dud.. Basically replacing everything from the Old PC but the case and DVD drives. If you buy a new AC adapter, make sure that you can return it in the event that the symptoms return. Please help! However, it would power on briefly, maybe 1-2 seconds, and then shut off. I would just like to know what might be my problem here, please? If you wiggle the plug in the back and you see the charging light turn on and off, then it isnt going to be an AC Adapter problem, but more of a connector issue. If the CPU reaches a certain temp, it will automatically shut itself off. 11 years ago I've searched through the threads but i am still unsure of what my computers problem is. Many online computer retailers sell power supply testing units for under $20. Any ideas what to do or try next ? Help please! and technology enthusiasts learning and sharing knowledge. To start, after removing the heat sink, remove all of the old thermal paste or compound that is on it. I remember that AMD motherboards would shut down completely after a few seconds if a cpu fan was not connected to the motherboard cpu fan header. I had a repair man come out a month or 2 ago and he replaced the blower motor and capacitor. In the event of a bad power supply, the only remedy is to replace it with a new one. PC turns itself off after a few seconds. So is everything else still running (hard drives, case fans) after the cpu fan stops? Peeked into the side window and noticed that the CPU fan was not spinning, so I assume it's turning itself off as a precautionary measure. Points awarded :) I wasn't aware that this system would turn the fan off. A faulty power supply can result in not enough, if any, power getting to the motherboard, causing the computer to shut off immediately or not turn on at all. CPU fan spins on and off repeatedly - posted in System Building and Upgrading: I am building my second desktop. 0 comments . And after few seconds it starts again. Hahahahhh ok, if the laptop turns off after a few seconds, something is most probably stuck in your fan, and as fast as the heat goes up, the laptop turns off to … The PC fan or is there more? Replace your power supply if it fails any of your tests. You might want to calculate how much power you need, because you may be exceeding it: (Unlock this solution with a 7-day Free Trial). I just replaced my cpu, with a new one, I turn on the pc and the cpu and case fan spin for 2-3 seconds then cut off, it happens each time i try and turn it on. If the CPU reaches a certain temp, it will automatically shut itself off. All of the fans are spinning, the CPU is locked into place, I've tried resetting the CMOS, I've tried a different processor, tried booting with only one stick of RAM, etc. All 3 Replies JorgeM 966 Problem Solver Team Colleague Featured Poster. After that, remove all your F_PANEL cables, where the power button and reset buttons get plugged in. How do i fix this? He said the problem is that there's no display so I then clean up the RAM and it booted fine and ok, but after booting up to windows using it for just a few seconds it will turn off automatically, then I tried to swap my working Power Supply on this computer but still this CPU is always turning off. I changed the fan over but I still have the same problem. I have seen before on many laptops where the connector in the back of the laptop gets damaged. It may just be a faulty fan. So I woke up this morning and went to boot up my PC to check my email. Laptop boots up though. however the problem still there. I've just finished building my own PC. Logged Karnac. I have personally replaced two CPU fans on these Dells. 11 years ago In reply to Push start button, fan ru ... Hi Tyler, i have the same problem. It turns on for no more than 5 seconds, then shuts off. There is an art at removing the CPU heatsink and fan and re-mounting it. report. We equally welcome both specific questions as well as open-ended discussions. motherboard: Gigabyte b250m Ds3H. Forums. You just want to ensure it comes back on as needed. When I attempt to turn on my computer the power light comes on and I hear the fans running but after a second or 2 the light goes off and the fans stop running, after a count of 2 the light comes on the fans start up again and the same thing happens again, on off on off I don’t have to touch the button the only way I get it to stop is pull the plug from the wall. Oct 15, 2016 #1 I've seen similar questions asked but nothing has helped. To determine if its an overheating issue, after you turn it on and it shuts off after a few seconds, does it turn on again after you try to power it on again, or do you have to wait until the CPU cools down? this might by your problem, we where having the same problem here. So I proceeded like this and the PC posts but the CPU fan shuts off after a couple seconds so I just turn the power off. power supply. This fan is spinning, but perhaps it is in the wrong header? 12 Answers. Needless to say I was a little shocked so I tried again, same thing. Thank you! It stays on from 2 to 10 seconds, and same again, everything turns off. I was also going to open up the case and check that all the fans run when the power does come on initially. 1.20 million developers, IT pros, digital marketers, share. Posted by 5 days ago. Simply blow some air in the opposite direction than the air usually goes This award recognizes someone who has achieved high tech and professional accomplishments as an expert in a specific topic. What is meant when “…PC will turn on for a few seconds.” What is turned on? My CPU Cooler's fan turns on for a few seconds, and then it turns off, please help. To determine if its an overheating issue, after you turn it on and it shuts off after a few seconds, does it turn on again after you try to power … save. Could be either the connector of the AC or the connector inside the laptop. I turn it on for the first time, fans and led lights go on for about 5-10 seconds then shuts off without anything showing up on the monitor. My CPU Cooler's fan turns on for a few seconds, and then it turns off, please help. Powered it up, nothing. The fans turn on for about two seconds, and everything turns off. Gain unlimited access to on-demand training courses with an Experts Exchange subscription. 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