Powering up the motherboard without a CPU Tags: CPUs Motherboards Last response: August 3, 2011 11:25 PM in CPUs Share d3mizzle August 3, 2011 11:14:56 PM I did this and all the fans that are connected to the mobo arent powering but the lights on the mobo do. Do you need a CPU in order for the fans to work or do I have a defective mobo or powersupply. More about : powering motherboard cpu chillin15 a b V Motherboard August 3, 2011 11:25:14 PM You need a cpu to even boot to bios...so yes, you need a cpu to do anything. I would not turn the mobo on without a cpu installed. m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedCan mobo beep without cpu? Cant power my pc up. split second fan spins no boot. Forum SolvedWould motherboard start up without cpu? Forum Nothing powering up after upgrading the motherboard and cpu Forum SolvedWill a motherboard power my chassis fan without a CPU? Forum Motherboard / CPU/ PSU not powering up... Forum SolvedCan I power on an Asrock Z77 Extreme4 motherboard without a CPU? Forum Will the motherboard power a PSU without having a CPU in the socket. Forum SolvedPowering Computer Without CPU (Repost) Forum with 8 pin power plugged in cpu fan tries to start..without it everything spins up but wont boot Forum SolvedIs my motherboard or cpu messed up or is my power source not enough? Forum Motherboard power without CPU Forum SolvedCannot tell whether motherboard or CPU is fried only power led on mobo and GPU light up Forum Mobo boots up without connecting cpu power Forum Start a motherboard without cpu ( but power for cpu) ? Forum SolvedComputer not powering up, Ways to test dead motherboard? Forum Mobo only powers up without the 4pin cpu power plugged in Forum motherboard and cpu wont power up Forum Solved8-pin CPU connector, CPU not powering up Forum SolvedRMA motherboard to Newegg without CPU cap Forum Refurbished PSU not powering up motherboard Forum More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !