why my computer's power is off after few seconds after switching?

Question

i changed the power supply but the problem still exists!!

Answer 1

Your problem here is that the computer is overheating! Now the hard part is to see exactly why. Well, you've eliminated the power supply because you changed it and the problem still exists.

The next thing would be to check the heatsink on the CPU (processor) itself. Make sure that's tight and is correctly placed on the CPU. It could also be a sign that the processor itself has gone bad.

And if you're over-clocking the processor's speed, remember that increases the heat, so that could also be your problem. If you are doing this, I would turn that off, or down if you went "too far." If this fixes the problem, then that means you don't have enough cooling within the box. To fix this problem, you can add another fan.

And lastly, it could be due to too many devices being connected inside the box, and/or a component going bad.

Answer 2

hi mate this appears like a secure practices reduce out characteristic operating,i had the same difficulty at the same time as i develop into construction a percenta few years in the past the reason behind my complications develop right into a incorrectly equipped heatsink,it develop right into a socket 478 heatsink and fan assembely and that i did,nt more beneficial healthy the fan to the heatsink wisely,so the bios may boot and then swap off the gadget some seconds later so open the case and no matter if it takes some hours flow by skill of the case with a very good the teeth comb,verify each and every connection and each and every jumper,swap and lead,its also a sturdy idea to search for suggestion from the motherboard guide that got here with the motherboard,or perhaps more beneficial see if theres a as a lot as date guide on line and at the same time as on the motherboard manufacturers webiste verify to work out once you've the present bios,i say this as some motherboards,extraordinarily once you've used a twin midsection processor like the midsection 2 duo,s or quad midsection will want a bios replace(flash) earlier you may wisely run the processor it truly is because some motherboards allthough the properly acceptable socket style were made earlier the processors were manuafctured and therefore want a bios replace also in circumstances like this i'd flow into the set up(bios) and set the percentto "use failsafe defaults" then keep and go out supply this a flow and allow me recognize once you've any complications sturdy success mate !

Answer 3

That can be a virus or something might be wrong with the processor. Processors overheating protection that is. I know that certain Emachines laptop models have this problem and upgrading CPU's driver solves the problem.If I got it righ you have a desktop though and since you did not give the make and model it is hard to be more specific. I would go to user forums of that make or PC in general and look the anwer there because there you will be able to find more specific answer to your problem. I usually use www.dogpile.com as my search engine.

Answer 4

this problem also occurred in my computer.first try to open the cpu cabinet and take out the RAM.there might be a thin layer of of dust on it.so try to clean the RAM nicely.then restart your computer.GOOD LUCK!!!!

Answer 5

Maybe a hardware component on the motherboard has failed. You might have touch the board and anti static has killed it. It doses not take much static to kill a board.