Hi, I'm a computer noob - recently attempted to build my first computer. After about 5-10 seconds both the lights (graphic card, cpu ) turns off. I have no idea how to fix this, there is one final cable that came with the case but don't see an entry plug for it. "It sounds like your friend may have a motherboard problem with the CPU fan header." okay, this cpu has been in my keeping for a year and 3 months now. The fan can get clogged with dust and lint hence preventing it from spinning. I would like to fix it here and now but that is not the case. Just started up and everything seemed to be working, except for one thing: The case fan that came with the case i bought 2 weeks ago, did light up it's LED light, but it doesn't want to spin. x blade case with 450w psu ... That will tell you if the psu is dead or not (its fan(s) should spin up). The 3 fans spins but the LEDS are not lighting up. Page 1 of 2 - Case fans not spinning - posted in Internal Hardware: When i am using my computer, my case fans are not spinning at all. I … The additional case fan does light up, and does spin. The fans are shown as 0 rpm. 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. They normally always start spinning when i boot it up. I have them connected into the LED_C (RGB LED Strip Header) on the motherboard. The wires going into the fan can also get in the way of the fan blades and prevent it from spinning (these fans don’t have a lot of torque). If your CPU fan does not spin, the issue could be anywhere from the fan, the motherboard, to the power supply unit. Damn it, but i really really REALLY do not want to get onto tech support about this problem, and be on the phone to them for hours racking up charges over a very big fan. Furthermore I wanted to get an additional case fan. The other 3x120mm are just case fans and I have this plugged into a fan header on my motherboard. Case fans not spinning on new build! They are spinning and lighting up, but in the software they are not detected. I bought the TT Riing Plus 12 LED RGB fans and installed them in my new system. Page 1 of 2 - case fan LED lights wont turn on anymore - posted in Hardware, Components and Peripherals: hello geeks to go! The fan in the back of the case does spin but does NOT light up. it's been a while since i've been here, a hardware problem occurred to me just an hour ago and i really need your help again, you guys have been reliable all these years. HP Recommended. When I turn on my computer, only one of the two case fans spins, my cpu and graphics card lights up but my CPU fan doesn't spin. I can't select a Hub number in the upper left corner. 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