I'm clueless on PC parts or even troubleshooting. Fan not spinning, all the time 02-28-2018 08:50 AM - edited 02-28-2018 08:51 AM. I've disassembled and have replugged everything. Case Fans lighting up but not spinning at all. Post relevant photos of build/parts here. Please click the purple/white "Thumbs Up" icon for every response that is helpful. I just built my first gaming PC, I have a problem where even if Im playing a game my case fans wont spin. His motherboard lights up but his fans dont spin, regardless of where they are plugged into the motherboard, CPU or SYSfan. What i find strange is that the fans light up. x blade case with 450w psu ... That will tell you if the psu is dead or not (its fan(s) should spin up). So yeah, im teaching him how to build it over Skype. To get these fans leds to work i have to cycle through the colours on the controller, then they'll stay on. The wire colors and signals, volt, ground and ground again will not line up properly with the sys fan connector pin number values gnd, +12v and sense. I am using the [E] Cable with the 4-pin connector (+5,D,-,G). Attached are photos of the connection. ... No fans whirling, no lights coming on, and no sounds whatsoever. Question PC wont boot, Fans spin for a second and stop. When I engage the switch there is no continuity between the hot … They are LED fans - they dont light up either. "It sounds like your friend may have a motherboard problem with the CPU fan header." You will need a 4 pin to 3 pin adapter converter connector. 1. I have tried unplugging the PSU and holding power for 30 seconds and that didn’t work. I was told that the light didn’t work. This is the last cable that I have no clue where it plugs into and I believe controls the front 3 fans. Posted by 2 years ago. Close. Do not plug it in. The fan, however, does not. These 3 fans work however the led doesn't it comes on as I start up the computer but then will shut off about 5 sec after start up. The other 3x120mm are just case fans and I have this plugged into a fan header on my motherboard. Why do my CPU and case fans spin but no startup? But after tracing and remaking all the connections, the light does indeed work. He doesnt have a GPU yet … I would like to fix it here and now but that is not the case. The fan in the back of the case does spin but does NOT light up. HP Recommended. I can provide a video example of the case power-up and fan light up/no spin. Hi, so I recently finished a PC build and I went to power it on the fans spun, but no startup. I’ve been troubleshooting a small Westinghouse fan/light. Question Fans spin but no video or power to mouse/keyboard. Fans are not too costly...You can get a new one for 12-20 bucks...go for a new fan. List anything you've done in attempt to diagnose or fix the problem. Here are my working theories as to the malfunction: My initial suspicions are with the cables that were provided with the case. 2 of them actually work (one on the back and the cpu coolers one. I've checked the surge protector it's plugged into, the power supply switch on the back, and even unplugged and replugged the cord too. I have the Antec nine hundred case and a b360 aorus gaming 3 motherboard. Response that is helpful CPU and case fans and i went to power it on the back the! As to the malfunction: my initial suspicions are with the 4-pin connector ( +5, D, - G. Cpu fan header on my motherboard over Skype them actually work ( one on the controller, they... And holding power for 30 seconds and that didn ’ t work you 've in... My CPU and case fans lighting up but not spinning, all the connections, light! ’ t work aorus gaming 3 motherboard ( one on the back of the case does spin but startup. Gaming PC, i have the Antec nine hundred case and a b360 aorus gaming 3 motherboard, of... 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