Solved Computer shuttong off 1 second after start up Tags: Power Supplies Computers CPUs Motherboards Last response: December 4, 2013 4:03 PM in CPUs Share Alzarius123 December 4, 2013 3:31:07 PM Brand new computer. i5 4670 CPU Corsair 750 W power supply Gigabyte ga z87x d3h motherboard I turn the computer on, and it starts to boot and immediately shuts down. THen it repeats that cycle unless I unplug the PSU. Things I have tried Switching memory sticks Unplugging everything except motherboard and PSU Resetting CMOS by taking out the battery. THe PSU was working 30 minutes ago when i took it from my old computer. More about : computer shuttong start littleleo a b à CPUs a b V Motherboard December 4, 2013 3:50:12 PM Does it stay on long enough to give you a beep code? m 0 l Best solution Alzarius123 December 4, 2013 3:54:05 PM User error. Both power cords had to be plugged in. Found it in another tomshareware thread Share Can't find your answer ? Ask ! Get the answer littleleo a b à CPUs a b V Motherboard December 4, 2013 4:03:19 PM Ah, yes it helps to have all the power cords plugged in. m 0 l Can't find your answer ? Ask ! Publish Related resources computer turns off after 1 second of ooting it up Forum When I start up my computer it turns off after a few seconds. Forum Need Help! Computer starts up for 1/2 second and then turns off Forum Solvedmy newly build pc won't power up properly. after 1 second it turns off again Forum SolvedBlack screen on boot-up and computer automatically turns off after 40 seconds. Forum SolvedWhen I start up my computer my fan makes some noise, after about 20 seconds it stops. Forum SolvedComputer restarts 1 Second after powering up. What's going on here? Forum Computer will not boot up. Turns off a second after powering Forum Computer turns off after 1 second Forum computer turns off 40 seconds after putting it on and never comes up again until i refix the power cable Forum SolvedWhen computer turns on after 4 seconds it turns off itself then turns on repeatedly until it starts working Forum Computer Freezes few seconds after start up Forum SolvedBuilding computer and it starts up then restarts after 10 seconds Forum Computer shuts off after 1 second-installed new MB yesterday Forum SolvedComputer starts up for a few seconds, turns off then on in a loop Forum computer powers itself off after 1 second Forum Computer wont start up after being off for 2 weeks Forum Solved5 second delay after pressing power button and start-up Forum PC starts up then turns off after 16 seconds Forum SolvedMouse freezes every few seconds after starting up my computer Forum More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !