In the heat of the moment — 12 Comments

  1. Have a look at the vent and see if a small bit of paper has been sucked up into the fan. Pick it out with tweezers.

    A fan that's been noisy for a while but gone suddenly silent is more of a worry. That normally means that it's packed up completely, so the processor is going to be toast in short order.

    • That was the first thing I did.  There was a bit of fluff all right [dust, not Penny's pseudo-puppy] but not so much as a single €5 note. 

      My problem is that it is a very quiet laptop – both drive and fan are whisper quiet – so I have to keep straining the ears to make sure the fan is still running [it is].  It is behaving itself perfectly, for now.

  2. Since I know what you're running for an OS, open a terminal and type in "sensors" and it will show you all your internal temps and fan speeds. If the internal temps are low then the fan might not be running but check back from time to time, especially if the laptop feels hot or extra warm, to make sure it is.

    If fan is not running or if it starts sounding like a turbine at full bore again, you might be able to get at it by simply removing the keyboard rather than the back of the laptop. Much simpler. And the fan is usually on the top of the MB near or on the CPU itself. Sometimes a spritz of canned air into the fan exhaust vent is enough to dislodge a bit of fluff as well.

    • Ho kay ….   tried that –

      Adapter: Virtual device
      temp1:        +67.0°C  (crit = +200.0°C)

      Adapter: PCI adapter
      temp1:        +73.0°C  (high = +70.0°C)
                             (crit = +100.0°C, hyst = +95.0°C)

      So my Virtual device is grand, with plenty leg-room,  but what's that "hyst"?  Hysterical?  Hysterectomy?

      • That's all you get, huh? Doesn't tell you much now does it? This is what I get:

         ~ $ sensors
        Adapter: Virtual device
        temp1:        +35.0°C  (crit = +127.0°C)
        temp2:        +35.0°C  (crit = +100.0°C)

        Adapter: ISA adapter
        Core 0:       +35.0°C  (high = +100.0°C, crit = +100.0°C)
        Core 1:       +35.0°C  (high = +100.0°C, crit = +100.0°C)

        Adapter: ISA adapter
        fan1:        2540 RPM
        temp1:        +35.0°C  
        temp2:        +37.0°C  
        temp3:        +28.0°C  
        temp4:            N/A  
        temp5:        +28.0°C  
        temp6:            N/A  
        temp7:        +27.0°C  
        temp8:            N/A  
        temp9:        +38.0°C  
        temp10:       +43.0°C  
        temp11:       +30.0°C  
        temp12:           N/A  
        temp13:           N/A  
        temp14:           N/A  
        temp15:           N/A  
        temp16:           N/A  

        Your PCI temp is too high so it might do to remove your keyboard and clean things out. You can check your fan operation as well  (quick power on and off). You should probably remove the battery while you do this but as long as you don't try to clean the innards with a wire brush then you should be safe. But with the PCI temp at 73C there's definitely a cooling problem.

        Hyst stand for "hysteresis". Usually a temperature monitoring circuit which determines when the fan is turned on and off although it's a differential thing. I'd say Google it as it can apply to a lot of different areas of electronics.

        • Damn!  Where did they all come from?  All I got was the lines I showed above.

          Incidentally, the crap machine I am using at the moment has a PCI temperature of 78°C!

  3. Dammit! Forgot to check that Notify me of comments box again. I'd worry about myself but I keep forgetting to.

  4. Are you sure Penny did open the laptop and eat the fan since the noise hurt her ears? 

    Hyst is probably hysteresis, once the critical temp is reached is has to drop below this temp before things are OK. Otherwise you get it critical, no it ok, no its critical, no it ok every few moments as temp goes 99.9, 100.0, 99.9, 100.1, and so on.

  5. I mostly use a desktop which my local nerd built for me about 5 years ago, and for the last few years when I start it after it's been off overnight (I mostly leave it running) one of the fans (I suspect the PSU) sounds like its bearings haven't seen any grease for years, but after 5 minutes it ceases to complain and all goes (relatively) quiet again. Dunno what causes it. I do a fairly regular dust-bunny removal programme, so I don't think foreign bodies are doing it.


    They are funny things, computers. When I was about 14, my school physics dept was given a redundant computer by a local company when they updated. To accommodate this marvel of modern technology, they had to commandeer two classrooms and knock the wall out between them. My vague memory (it didn't interest me so I didn't take any note) is that it was banks of valves and relays chattering away, and it computed less than a 50 cent / pence calculator does these days. Now they are so clever they've taken on a life of their own. You know, "the sum of the whole…" etc. A bit like cars. Or my cars, anyway.

  6. Don't worry about it. If the fan stops the processor will shut down when it reaches the threshold temperature. Nothing will be damaged but the PC may not stay booted for long until a new fan is fitted. You can usually set the threshold temperature in the BIOS settings.

  7. In case anyone noticed my absence [which I doubt], the fucking thing blew up again.  I'm not so much worried at the fan stopping as I am about the effect on the house foundations with all the vibration.  Herself has quite a smile on her for some reason.

    Leastwise, I have a feeling the machine is in for a trip to the hospital/knackers yard tomorrow,

    At the moment, I'm using an ancient Acer which has a habit of suddenly switching o

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