My PC is essentially new and overall it has been working OK. When you plug the power from the wall into the power supply, the fan should move. FML. Definitely doublecheck which you have. Warning: Desktop power supply units (PSU) is also equipped with a fan. Status Not open for further replies. Later I checked it again and the fan was not spinning at all. Question Installed cpu fan, case fans not spinning and no display: Question Working PC to new case Doesnât work: Question When booting PC gpu fans spinning at 100% and no display on monitor: Question Mobo lights work, fans dont spin, PC doesnt boot, PSU gone? Wow I used to stick my screwdriver through the grill and stop the fan on my power supply but after that stopped working I knew I had to find a better way. If the fan doesn't move, you have a dead power supply. Also, you donât have to reinstall Windows or drivers if the CPU fan is not spinning because it is not an operating system or software related issue. >I was just plugging a different mouse into the back of my computer and realized that my PS fan isn't spinning.< I learned the hard way NOT to mess with mice while a computer is running. First diagnose the bad or failing power supply. Learn how to repair a desktop computer power supply. Weâd suggest swapping out the power cable youâre using, and possibly trying a different wall socket before going down that road, though. I happened to look behind the PC last night and noticed the power supply fan would spin, stop, spin, stop over and over. This makes me think that you should not risk running a PSU, no matter how low power, without a fan, unless it's a specially designed fanless PSU. Do not attempt to open the power supply to clean the fans. The G2 does not have that ecomode, so if you do have a G2 and if the fan is not spinning I would advise you call tech support and set up an RMA. ... Power didnât turn the PC on, hit the reset switch and instant smoke from the ram. Hi, I have a Silver Stone SFX 700 watt power supply.. the fans do not spin at all.. Everything is powered on and works fine. When touched, it's case is not even warm...hence not turning the fan. Now it's not working⦠PSU fan not spinning. I used a can of all purpose spray lubricant (Yeah I know WD 40 is not lubricant) and I sprayed it into the power box through the back aimed at the underside of the fan and voila. Ensure to power off the PC and disconnect the power cables and use a compressed air canister to clean any dust or debris. If not, then you might need a new power supply. Do not attempt to open the power supply to clean the fans. Question PC suddently turned off and burn smell. E.g. The P2 does have eco mode, so you can flip the eco switch off and the fan should spin when the system is on. my system that is running Prime95 (small FFT test) for the last 12 hours and the all four cores of my i7-3770K are at a constant 89degC when clocked at 4.8Ghz but the my new AX760's fan has not turned on for the last 12 hours. ⦠Antec VP700P plus power supply 1 external fan 2x brand new Cooler Master MF120 Halo white RGB fans- using at front of case for intake PC up and running have bought the 2x halo fans recently, have installed both at the front for intake. Hope to god I can salvage my HDD and SSDs or else 10 years of musical ideas will be gone. If your motherboard is not getting power and the case fans are also not spinning, then it is an issue with the power supply, and you need to get it replaced if it is faulty. Note the fan inside the power supply. 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