Computer turns on and turns off a second later. Tags: Prebuilt Computer Keyboards Systems Last response: September 5, 2012 11:40 PM in Systems Share Saintrhys September 5, 2012 5:00:38 PM Hello, I just bought a computer and I set it up, turn it on and it turns off again a second later then will not respond any more after that. I sent it back to the company and they called me saying it was working that it just turned on and off but started up again 3 seconds later. So I receive the computer back and set it up once more to find that it is still doing the same. Am I doing something wrong when I'm setting it up, like having a mouse and keyboard plugged in or is it to do with there not being and OS installed yet. Any help would be amazing. More about : computer turns turns jay2tall September 5, 2012 11:05:50 PM If you bought this off the shelf and wasn't built by you I'd try the below. They may sound silly, but just try them. By the way what brand is it? - Plug it directly into the wall and not through a power stripe. If that doesn't fix it take it to another room that is on a different circuit breaker and try directly in to the wall. - Replace the power cord and try a new one, maybe swap from a monitor or something. I've seen a bad power cable before and I was very frustrated by the time I figured it out. - turn it on without anything plugged into it like monitor, keyboard, mouse, etc. I've seen some really strange things already where a keyboard made a PC reboot. cmichael138 September 5, 2012 11:40:45 PM A computer that is working properly should not turn off and then back on 3 seconds later. If the company told you that, you should take it back for a replacement or repair. Can't find your answer ? Ask ! Publish Related resources: ForumComputer turns on, then turns off one second later . ForumI turn on my pc then 2 seconds later it turns off . ForumComputer turns on for a second then off ForumComputer turns on for a split second then shuts off ForumPC turns off a second after turning it on ForumComputer turns on for about a second , then off . ForumComputer turns on for a split second , then shuts off . ForumComputer turns on, shuts off after one second ForumMy computer turns on in a split of a second and turn off ForumLaptop turns on then shuts off few seconds later . ForumPC Turns On for About a Second Then Shuts Off ForumComputer turning on, 3 seconds later off ? ForumComputer turns off 3 seconds after turning on ForumNew build turns on the off after half a second ForumLaptop turns on then shuts off few seconds later . get new laptop?? ForumMy Computer Turns On For 3 Seconds, Then Shuts Off ForumComputer turns off after 3 seconds. Help! ForumPCI compatibility question ForumSomething seriously wrong with my computer ForumIs my computer parts compatible? More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !