Why the CPU in computer shutting down automatically?

India
April 20, 2010 12:13am CST
Sometimes CPU in my computer shutting down automatically and then if I start it is not getting on.But there is power supply and the monitor is on.After waiting for sometime if I put it on and it is getting on. Some hardware/software engineer are saying it is due the fan or Ram which is not functioning well.I request the myLotters to air their views.Happy myLotting.
4 people like this
23 responses
• India
20 Apr 10
Hello, The possibility that your CPU is NO MORE is quite low. Processors are not made to be quite resistant to adverse situations. I mean, they have some inbuilt sensors and protection mechanism that shuts it down if there is any possible threat to it. Now what you should do is to open your chassis and turn on the power. Now, if you see that the processor fan is moving then it is probably nothing related to processor. If its not, then its surely your RAM. Try to bring a RAM of the same kind (DDR1,DDR2 etc) then turn on your computer with this new RAM. Don't forget to remove the old one. This time, I guess you will face no problem at all. Then you remove that RAM and buy yourself a new RAM. Thanks God bless you
1 person likes this
• India
20 Apr 10
Thank you for the response. So far I have not opened the cabinet and now I shall open it and check according to your instruction.For the last one and half hours I am working with this and it is working fine other than getting some mild sound. Happy myLotting.
• India
20 Apr 10
mild sound? Tell me about it
• India
20 Apr 10
Believe me, I know this is your first time, but if you gather up enough courage and start to troubleshoot your own problem then you will never need to call a professional. Its so easy
@maikeruk (406)
• Germany
20 Apr 10
you can narrow down the problem like this. 1. if when you turn on the system again you have some glitch on the screen is a problem involved with ram or video card. 2. if the system goes off and you can turn it on immediately and use it again is more like a ram issue. 3. if the system goes off when the computer was doing something with a lot of processing power and shut down and doesnt want to show anything it is overheating... sometimes happens that the overheating issue is misunderstood. when the system doesnt come back normally after re turn it on might not be that the memories are damaged too. but only that the system is overcharge a bit... try this when it goes of disconnect the electricity and any other periferal... press the power button for some seconds to discharge the system for at least 15 seconds then plug everything again and turn it on. if it comes on normally your memories are ok just were overcharged in that case, take 3 dollars and buy another fan for your cpu. if you better can change the whole heatsink with new termal paste
1 person likes this
• India
20 Apr 10
Thank you for your response.Your 3rd points relates to my problem.I allow the computer to get cooled and then I put on the computer and it works.Now for more than one and half hour I am working and it is working fine.Fan, though I have replaced it very recently and it is not the original one. we rely on the service engineers, they say they do not get the original fan and it may be the problem.Happy myLotting.
@maikeruk (406)
• Germany
20 Apr 10
well is sometime true what the service engineer said about the no original fan. but the problem is not the fan itself. look the heatsink that goes over the cpu use something called thermal paste, that helps to conduct the heat of the processor to the heatsink better, the problem is that sometimes when you get that replaced if you put TOO MUCH of that paste it cause the contrary effect, so thats why i recommend to change all the heatsink and the fan. :-) that is pretty common with the time and the accumulation of dust in the poor fans. dont force the computer now because it might cause a permanent damage on the cpu unit :-) keep the cover of the cpu open while you use it until you get a new heat sink.. might be a bit noisy but will save your pc.
• India
21 Apr 10
I shall try to keep the cover of CPU open as you have suggested . Also I will inform the service engineer about the thermal paste and I will instruct him to check it.Thank you very much for your valuable suggestion. Happy myLotting.
@Arioch (190)
20 Apr 10
This does sound like it may possibly be an overheating fault. Does the fan inside your computer on top of the cpu run? Also does it come up any specific errors at all?
1 person likes this
• India
20 Apr 10
No specific error.But it is due to the fan.I shall take all the opinion of all our Mylotters. The information may be useful for all of us if not today for tomorrow.Thanks for your response .Happy myLotting.
@shibily88 (205)
• India
21 Apr 10
because of unwanted programs ie virus or motherboard problems
• India
21 Apr 10
Thank you for the response.
• India
21 Apr 10
I have taken note of the views of myLotters including yours and I shall check my CPU myself without help of Service Engineer. I welcome you myLot.Happy myLotting.
@derek_a (10903)
21 Apr 10
I had this same problem with my last computer and after a while, I decided to give up with it and get a new one. Because the machine was so old, there would have been a problem finding a suitable CPU for it, and then whether or not the motherboard would have lasted it. With several years of it would get hot and this put a lot of strain on the components. The computer I have now, is giving problems. I don't know how long it will last, but I have backed up my harddrive and files and then if I need a new computer, it will just a matter or reinstalling all the software. I am hoping that it will keep going for a while though, but I have certainly had many years of good life from it. _Derek
• Indonesia
21 Apr 10
How old is your PC? If more than a year, dryin electrolit capacitor on your mainboard could be the cause. If not, i think your processor is overheating, i've seen this lot with processor fan that not original, the fan is to slow and the heatsink is to thin. Go buy the good one (original will be best), or you say there is no original fan in your tech place, just buy water cooler or radiator type... More expensive but more powerfull. You can check your BIOS and see the CPU temperature there, normally it's arround 50-60 Celcius and steady. If temperature increase and keep climb, that not normal.It usually turn of your PC automatically arround 80-90 degrees.
• India
21 Apr 10
hi derek_a thank you for the response.You might have got some clarification from our friend myLotters. Happy myLotting. hi nauval2007. Thank you for your response with clarification and suggestion to both of us to solve our CPU problem.Happy myLotting.
• India
20 Apr 10
Hi, there are 2/3 reasons for this type of problem. 1. SMPS problem: due to SMPS this problem can arise. If you replace the SMPS this problem can be solved. 2. Power Switch: Power switch problem can be a reason for this. Need to change the Power Switch. 3. Motherboard: This is the last option if the other 2 reason do not work. you will have to change the motherboard. This problem can't arise for any other reason.
• India
20 Apr 10
Thank you for the response.Yesterday, I have worked and there was no problem. Now I started working.Mainly it may be the problem with the fan.I have taken views from all our myLotters and I shall try myself or else, I may entrust the service to the service Engineer.Happy myLotting.
• India
29 Apr 10
Fan problem and now replaced and functioning well.
@xenobane (205)
• Canada
23 Apr 10
CPU fan is your main problem it seems, it could be dirty from all the dust it collects through the use, or its cooling efficiency is lower than your old one, and it can't cool the CPU fast enough. You can install monitoring software like SpeedFan, it can show you temperature inside the case (that is if there are already thermal sensors on the motherboard, many of the modern boards have lots of them), like CPU temperature, Hard Drive and motehrboard temperature, is a very useful tool and is free. Another thing to look for is thermal paste, is as important as the fan itself. The paste's quality will affect how well it can transform the heat from the CPU to the fan, if your old paste is running poorly, it will slow the cooling effect. There are many pastes to look for on the market, depending on your situation, you can choose the best ones accordingly. Once again, if cooling is your main problem, look into the thermal paste as well as the fan, as they are both important.
• India
24 Apr 10
Thank you for your response.Fan is the problem . Now my CPU is functioning.Happy myLotting.
• Iran
21 Apr 10
Hi,usually CPU so that when temperature is made to the measure that appears (to CPU strain fail) it automatically sends the shutdown command. It delivered may not cool CPU You must be a bug in CPUCooling search if CPU fan is working or whether it could Hrart CPU leather Fth is oriented material, or whether transition temperature of the CPU is not obviated.
• India
21 Apr 10
Thank you for the response.Happy myLotting.
• United States
21 Apr 10
I had the same problem on two computers at different times, it seem that i picked up a virus that was to take control of my system, and then I loaded spy-bot search and destroy and that found it and taken it out, then I reformatted the hard drive just in case, because sometimes it can hide in several places and come back later, but you can run this program, then when you are done restart the computer and backup your files, and format the hard-drive, then reload your files. that should make your computer as fast as new.
• India
21 Apr 10
I do not think any virus in my computer.It is due to overheating of processor.The fan is recently replaced is not the original one and it may be due to that.For the last few days and after I post the question in myLot, the CPU is functioning well.Earlier I used to switch off the supply to UPS when I do not use the system. Now, I keep the supply to ups on, at all times.Let me wait for some days.in the mean time I do clean the dust inside the CPU as suggested by myLotters.
@Harley009 (1420)
• India
21 Apr 10
if it is a desktop computer, you try opening the case. Power off, and check there are enough air circulations and no accumulated dust and easily rotating the fan on processor, graphic card, smps and case are running without interruption. If it is a laptop, don't keep it on a cushion like surface, place it on flat hard surface. if the air circulation is less, you can buy Laptop cooling pad that run using USB power. Also the room has proper air circulation and not very hot. If your Processor get overheated, it cause unstable flow of current it will shut down. Peace.
• India
21 Apr 10
Mine is desktop computer. I shall do check the dust inside the CPU. Thank you for your response with suggestions. Happy myLotting.
@May2k8 (3632)
• Indonesia
21 Apr 10
Have you checked your CPU temperature, for a new computer system which is usually always read and if they can cause damage to it will automatically turn off. The main factors that cause this to happen is the fan spinning very slowly and you need a fan that spins faster and stable. Fan hampered because many of the inherent dust, then you can use cooking oil if I'm not wrong after cleaning it dry and then reinstall them.
• India
21 Apr 10
In my CPU, fan is the problem. I shall try myself to remove the dust from the fan.If it does not work then I will call Service Engineer. Thankyou for your response.Happy myLotting.
• Romania
20 Apr 10
I had the same problem once, my computer was switching off. My problem were the coolers who were too dirty. To find out if this is the problem just enter your BIOS (when your computer boots press long DELETE, it is the most common key to enter BIOS) then check your processors temperature. If it's too high the the cooler is the problem, it will also show you if it's too hot or not.
• India
20 Apr 10
Thank you for the information. I shall check the temperature. Coolers may be the problem.Happy myLotting.
• Australia
20 Apr 10
I had same situation before.the temperature in the computer is so high that it would shut down automatically in case to ruin the hardware.I think you need to add a fan or chang it.
• India
20 Apr 10
Fan may be the problem. Recently I have changed the fan but the service engineer says , they do not get the original fan and so, it may be the problem.Thank you for the response. Happy myLotting.
@rjvb26 (2518)
• Philippines
20 Apr 10
If you heard several beeps, try checking the peripherals inside the computer, those are sometimes a cause of memory with problems or much worst mother board. I do not think it is with your hard drive because if it is a cause of the hard drive it will still boot but a message will appear stating "operating system not found". I often encounter problems like that with my clients, and the common cause is a malfunctioning mother board, memory or other hardware cards inside the computer.
• India
20 Apr 10
I do not encounter such problem. It shuts down automatically.Now I am with you commenting your response and it is now functioning. For the last two hours I am working.Over heating may be the problem. Thanks for the response. Happy myLotting.
@piya84 (2591)
• India
20 Apr 10
what error it is showing?Mine was doing same thing and i read error message and it was said that that i had change some setting or installed some software which is causing trouble.I restarted computer and type F2 then choose restore previous setting.My computer is working good right now.
• India
20 Apr 10
While functioning , it automatically shuts down. No error message shown.It is due overheating of processor.Fan, I got it replaced but that is not the original fan.Now, although I am working for more than 2 hours , it is functioning very well.Thank you for the response.Happy myLotting.
• Philippines
20 Apr 10
aside from the RAM and overheating, a virus may also be the culprit there. its hard to specifically tell for a solution to your problem because the thing that you mentioned is not that detailed. try to observe more when your computer shuts down automatically.
• India
20 Apr 10
Thanks for your response.Virus problem is not there.When I am working with the computer, it automatically shuts down. After some time if I put it on it functions.Sometimes it works hours together and function till I shut down. But I can not rely on that, sometimes immediately after functioning for sometime it shuts down.Now I am working for nearly 2 hours, it is functioning normal.Our myLotfriends has suggested some ways including yourself, I will check all the possibilities before calling Service Engineer. Happy myLotting.
@siliguri (4051)
• India
20 Apr 10
My computer also had faced same problem few weeks what i did firstly i ask my friend who has good knowledge about hardware he said me to format it..and i had did what he said..and it really works..now my computer working perfectly..so i suggest you to go with formatting...BEST OF LUCK..
• India
20 Apr 10
Thank you. I will also check whether formatting will solve the problem.Now it is working for the last one and half hours.Happy myLotting.
• Philippines
20 Apr 10
Most probably the problem is with your power supply.Maybe there were a lot bad components not giving enough power to your pc that is why is will shutdown automatically and on after a long while. Try to open your power supply inside if your not afraid to open it just unplug the power cord first. I have encountered this kind of problem a lot and most it is the power supply. Or the best thing to do is bring it a shop and try to swap it with a new power supply.
• India
20 Apr 10
But here I have no problem with the power supply.I have checked and I take more care on power supply.The Service engineer says that it may be due to fan which has been replaced very recently and that is not the original one.However he will check it up.Now I have opened the computer at about 1500 PM IST and now the time is 1615 pm , WITHOUT ANY PROBLEM IT IS WORKING. I THANK God FOR THAT.Happy myLotting.
@beachdune (908)
• India
20 Apr 10
My computer was affected by the same problem a few months back. Then I was told that the fan in the CPU has been too slow for a processor ( Core i 7 ) that emits lot of heat. So I immediately replaced my CUP fan with a Intel ion - cooling fan and a larger cabinet which allow lot of ventilation. Note : If there is a problem with the RAM , the computer will not start running . This is not in your case , so there will no issues with the RAM. Better change your CPU fan or the excess heat may affect the motherboard.
• India
20 Apr 10
I have taken note of your information.I have also replaced the fan very recently.I will check the fan type.I have got an information ,this problem may not be with RAM.Thank you for response. Happy myLotting.
@knicnax (2234)
• Philippines
20 Apr 10
There are a lot of reasons why your computer may shut down. It may be due to faulty wiring. When you or the computer suddenly jerks, does it power down? If it does, there is a short in you motherboard When your computer shuts down automatically then you immediately turn it on after, does it give out any unusual beeps? Typically, 1 short beep means that the computer is running smoothly. If it's giving out weird beeps, It may be because of your hard disk or RAM, or any other expansions you may have installed on your computer It could also be that your power supply cannot supply the needed electricity inside your computer, how many peripherals (expansions, hardware components) do you have? What operating system are you using? It could also be that you are feeding 110v current to your power supply when it has a setting of 220v. This might cause the power supply to overheat and die on you. overheating could also be due to the weather, make sure your computer is properly insulated :) hope these help you out. If you have any other questions, feel free to reply or to send me a message :)
• India
20 Apr 10
All the four points ,I have checked and every thing is fine. Overheating may be the problem and it may due to the fan. I have recently changed the fan but the service engineer says, they do not get the original fan and it may be due to that or the problem may be with RAM.Thank you for your information.Happy myLotting.