Solved computer boots up for 2 seconds then shuts down Tags: Computers CPUs Motherboards Systems Last response: January 6, 2014 9:54 AM in Systems Share Treeroy January 6, 2014 9:35:25 AM I've just installed a new cpu and motherboard. When I turn the pc on, it shuts down after 1-2 seconds. It then turns itself on again and this happens a few times. I'm thinking I may have not plugged something in? What is the problem? More about : computer boots seconds shuts Best solution shortstuff_mt a c 77 à CPUs a c 89 V Motherboard January 6, 2014 9:40:51 AM This troubleshooting checklist was created for this type of problem. "No POST", "system won't boot", and "no video output" troubleshooting checklist "No POST", "system won't boot", and "no video output" troubleshooting checklist This checklist is a compilation of troubleshooting ideas from many forum members. It's very important to actually perform every step in the checklist if you want to... See full content Share Treeroy January 6, 2014 9:54:40 AM Well that was embarrassingly simple. I hadn't plugged in the cpu power cable. In my defence, I had looked at the cable and wondered where it had to be plugged in! Thanks, lifesaver. m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedComputer boots up for about ten seconds, then shuts down. Forum SolvedComputer boots up then shuts down after a second. Forum Computer Repeatedly Starts Up for 1-2 Seconds then Shuts Down for a Few Seconds Forum Need Help Custom build boots up and 3 seconds later shuts down then repeats. Forum Computer boots for a few seconds, then shuts down Forum Need help fast, comp boots for 2 seconds then shuts down Forum Computer shuts down after 2 seconds Forum SolvedPC boots for 2-3 secondes then shuts down Forum Pc starts up then shuts down 2-3 seconds after Forum Computer boots then shuts down after a second. Forum PC starts up then shuts down after a few seconds before booting up Forum When i turn on my computer it shuts down after 2 seconds. Forum Computer shuts down 3 seconds after starting up. Forum My computer shuts down everytime I play a game and after a few sec boots up again Forum SolvedI have a windows DELL base computer. Was on OS Vista, upgraded to 7. It fails on boot-up and actually shuts down. It senses th Forum PC boots for 2-3 secondes then shuts down Forum SolvedCraigslist deal for dell optiplex 760 came with core 2 quad q9400 starts up for 1 second and shuts back down usff Forum Computer Boots up then shuts down Forum Computer shuts down after 2 seconds. Will not reboot Forum computer boots up then shuts down Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !