My laptop turns off without any reason

posted in: Notebook Shuts Down | 180

After I turn on my laptop it works fine for 25-30 minutes and after that just turns itself off without any warning. When I turn it on again, it works for some time and then shuts down again. What is going on? How can I fix it?

Most likely you experience a laptop overheating problem and it would be fixed by cleaning the cooling module – the heat sink and the fan. The notebook processor produces a lot of heat when the notebook is turned on. The cooling module helps to keep the CPU cool when the laptop is working. The cooling module includes two parts: the heat sink and the cooling fan. The heat sink is attached to the CPU and helps to conduct the heat from the processor to the radiator. The cooling fan blows on the radiator and helps to disperse the heat produced by the CPU. The laptop will overheat if the heat sink radiator is clogged with lint and dust or if the cooling fan stopped spinning.
If your laptop shuts down after some time without any reason and warning, check if the cooling fan spins. Usually it makes some noise and you can hear it. If the fan works fine, then check if the heatsink is clogged. In some cases you can clean the heat sink with compressed air, just blow inside the fan openings on the laptop bottom. If the heatsink is completely clogged, then it is necessary to remove the heatsink for cleaning.

180 Responses

  1. Courtney

    I have a Dell Inspiron 9100 notebook. Today it just shut down by itself and it won’t start. It isn’t the adapter because when that is plugged in the green light is on. I have tried to turn it back on and the lights flash, but then it just shuts down. I actually got it to load my desktop, but then it froze, again. I called Dell, but they weren’t much help. They had me take my battery out and push buttons. Nothing worked. They want me to ship my laptop to them, but I have school work that I need asap. Any suggestions??

  2. Laptop Freak

    After the notebook shuts down do not turn it back on for 15 minutes and then test it again. Will the notebook work longer if you let it cool down for a while? Isn’t it hot if you touch the bottom? Can you hear the fan running?

  3. I have a Sony Vaio VGN A140P

    Problem: I was running on battery(100% charged) and my laptop just shut off by itself. Then I pressed the power button and nothing happens. So I take out the battery and put it back on, the laptop turns on but turns of during boot up.

    So I think it may be the battery and remove the battery and began to work on the AC and it was working fine. Then unexpectedly the Laptop turns off by itelf without warning, and it did not turn on immediately after that. So I put the battery back in and I am running fine on the battery.

    What do you think the problem is?

  4. Laptop Freak

    George Fernando,
    How much time the laptop works without shutting down? Try booting the laptop in safe mode and check if the laptop still shuts down. If the laptop works fine in safe mode you might have a software related issue.

  5. Laptop Freak


    Any possibility for fixing it with your own hands?

    Sure, take apart the laptop and replace the fan. :P

  6. George Fernando

    Hi, I have a dell inspiron 8200. I removed a couple of unused application, did a disk clean-up through systems tool, and a disk defrag. Then I reboot my laptop and all of a sudden, it just start shutting down for no reason with no error message. Does it have something to do with the disk clean up or defrag after the software uninstall? I wasn’t sure since it works up until the reboot. Please help :(

  7. Hi,
    I’m having the same problems. Fan just died, and i’m pretty sure it’s the processor fan. And yes, this is a laptop. I was thinking maybe some drivers or something were gone really bad, but everything seems to be working fine. But the fan just won’t move.
    It’s not stuck, i’m sure about that! Recently cleaned the entire thing. Any possibility for fixing it with yor own hands? I might be pretty good at it ;)

  8. Laptop Freak

    Start minimizing the system. Remove the battery, DVD drive, hard drive, wireless card, etc… Try turning on the laptop after each removed part. Reseat the memory modules, move RAM stick from the slot A to the slot B (if you have two memory slots and one module). Disconnect the keyboard and test the laptop again. In short, minimize the system until you have only three parts: motherboard, memory and CPU (with the cooling module). If the laptop still shuts down even after you completely minimized it, you might have a bad motherboard. From my experience a bad CPU or memory module will not force the laptop to shut down after 3-4 seconds, you just cannot start it but it usually stays on.
    BTW, here’s one more thing. Disconnect the video cable from the motherboard and test the laptop with an external monitor. A few month ago I had an HP laptop with a similar problem and I solved the problem by reseating the video cable on the back of the LCD screen.

  9. I have a compaq armada M300, You try to turn it on, it will go off in 3 – 4 seconds. Disconnected battery and tried A/C and still same problem. this is done at a cold start up. Any ideas ?

  10. Anshuman


    I have a Gateway 7330GZ Laptop. Pentium 4 3.2GHz with 992MB RAM. Its a year old, its got windows XP, Lately its been shutting down on its own after running for about 30 or so minutes. It doesn’t turn on if I try to turn it on immediately but if I let it be for 15 or so minutes then it turns back on and runs like normal(for another 30-45 minutes). I can follow the link in this post and try to make sense of them( I have no idea where heat sinks , cooling fans etc are)provided you can tell me that the directions for my computer are no different from that for a Toshiba.

    Any help will be greatly appreciated.


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