How to fix a computer it turns on and off then back on Tags: Homebuilt Computer Systems Last response: December 18, 2011 5:24 PM in Systems Share bigman1 December 18, 2011 4:11:37 PM it trun's on then back off then back on then back off. why is it doing this More about : fix computer turns back Raiddinn a c 78 B Homebuilt system December 18, 2011 5:24:46 PM I need more than this. Start with full system specs, maker and model of everything. If it ever worked, for how long did it work? If it is a new build, it sounds like either 1) The RAM isn't all the way in the slot, or 2) The RAM is bad. Can't find your answer ? Ask ! Publish Related resources Computer turns on then off then back on...why? Forum Computer Turns On, Then Back Off (for about3 seconds), Then Back ON Forum Screen shuts off after windows 7 logo then turns back on. Forum Computer shuts down then turns back on Forum Computer turns off then on, No screen after upgrade to new cpu cooler Forum Computer turns on for about 3 seconds then turns back off Forum Computer turns on for a split second then shuts off Forum New computer turned off by itself and now won't turn back on :( Forum URGENT computer turns on and off repeatedly, needed for school Forum When i turn on my computer it turns off Forum Computer turns on, then off before the bios, then back on. Forum Computer Turns Off and On at Startup Forum Computer turns off during boot Forum PCI compatibility question Forum 1500 gaming computer. Forum Computer boots up to black screen Forum Best kind of computer for watching streaming video Forum [Solved] First power up: turns on and off Forum Help Building a Performance Computer; $2000 budget Forum 1500 gaming computer. Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !