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