my cpu running at 75C

[newman]

1) Before you solve the problem, avoid having the computer on for extended periods of time, or you might lose the CPU. 75 C is way too hot. (It is for desktop CPUs anyway; I don't know what the redline is for mobile CPUs, but 75 C does sound like a lot. I could be wrong, though)
2) If you find out that this is indeed too hot, verify that the temperature is indeed 75 C. Some monitoring apps don't work well with certain chipsets/CPUs. Google around for a reliable one. Check BIOS for cooling options.
3) If in the end you find out that you indeed have an overheating problem (how does the system behave? unstable? freezups/spontaneous restarts? artifacts on the screen?) you should take your laptop to your tech support. If it was a desktop I'd tell you to check on your cooler, heatsink, to verify that you have set up your airflow correctly etc., but in case of a laptop you should really take it to your tech support even if your warranty expired - in this case paying for the repair is well worth the money.

Good luck!

[Fudge]

thanks for your reply, im preaty sure it isnt over heating, i'd say it was around 50C and the sensor is broke. the only problem is, the fan is going like crazy eating my battery so im sure it cannot be healthy, also i dont know weather it is really over heating.

Fudge

[newman]

50C is still rather high for a desktop config, as I said I don't know the standard for mobile CPUs but it would make sense to me that they made them to run cooler, not hotter.
If the temperature reports are innacurate, your fan could be receiveing incorrect information and trying to compensate for supossedly high temp by maximising its RPMs..
However this is all a guessing game and my advice from before stands - call tech support, in case of a laptop this is your best bet.
BTW what laptop is that? Specs?

[lots]

You forget that the laptop has a disadvantage when it comes to cooling. Everything is so crammed into tiny spaces, taht there's barely any room to have flowing air. I would expect higher temperatures in a laptop than in a desktop. It would be nice to find out if its the temperature sensor that is broken. If the thing is broke, and reporting temps higher than what they are, the CPU fan could be spinning up, thinking its hotter than it really is.

[Fudge]

You forget that the laptop has a disadvantage when it comes to cooling. Everything is so crammed into tiny spaces, taht there's barely any room to have flowing air. I would expect higher temperatures in a laptop than in a desktop. It would be nice to find out if its the temperature sensor that is broken. If the thing is broke, and reporting temps higher than what they are, the CPU fan could be spinning up, thinking its hotter than it really is.

yup im thinking that is what is happening because no matter weather im rendering useing 100% cpu for an hour or just turnt on from cool reports 75C so i think that a sensor is broke, although how can i be certain? and how easy hard would it be to replacea sensor?

[alejandro_m1]

yup im thinking that is what is happening because no matter weather im rendering useing 100% cpu for an hour or just turnt on from cool reports 75C so i think that a sensor is broke, although how can i be certain? and how easy hard would it be to replacea sensor?

Please give some info on your hardware, we still don´t know if it´s a desktop or a laptop :rolleyes:

Some motherboard have problems reporting the right temperature to specific software as nighttrain stated, some are fixed with flashing to the latest bios. But without knowing for certain it´s difficult to give a better advice.

Also if it´s a desktop: turn it of, open it and see if the fan is intact, I had a fan broken (just one of the fins) in a msi mobo core cell if I remember correctly and it was making an awful noise and the utility reported high temperature. This can happen to any fan if it hits anything, including cables. I presume the one that reports high temps in your system is your CPU? Check that first. Also clean all the fans that should help specially if you are in a place with lots of dirt or if it has sometime without cleaning.

[Fudge]

hello all, i have a laptop

i said i had a laptop in my first post.
ihave an itel 855pm
pentium m centriono 1.70ghz

hope this helps

btw i have been having alot of trouble trying to find a bios for that motherboard so if anybody knows a download link please send me a link.

Fudge

[lots]

You'd have to get the BIOS flash directly from your computer manufacturer. Whoever that may be, since you didnt tell us ;)

[Fudge]

oh my computers manufacture is fujizu siemens... but i think they have died or somthing... there site doesnt have much information or any bios downloads...:(

[lots]

Fuji is still around. You will probably ahve to dig for a bios flash considering that they're a big company that make alot of diff things

[newman]

You forget that the laptop has a disadvantage when it comes to cooling. Everything is so crammed into tiny spaces, taht there's barely any room to have flowing air. I would expect higher temperatures in a laptop than in a desktop. It would be nice to find out if its the temperature sensor that is broken. If the thing is broke, and reporting temps higher than what they are, the CPU fan could be spinning up, thinking its hotter than it really is.

Actually I did think about that, but then I thought they designed the components to emit less heat to compensate, so 75 C still sounded rather high..

[lots]

The components do, but when all you have is a tiny, in most cases 40mm fan, some little heat pipe, and a very small heatsink on the end of it, things get hot. Outside of the CPU (and GPU cooling, if it has one), there is barely any room for air to move in a laptop case. Thus parts heat up quite a bit. Also, laptop hardware (GPUs, CPUs and even the HD) either have several low power states or turn off after a specific amount of time. This helps them produce low heat when not needed, but once you up your usage, they begin to eat more power, and produce more heat. So yes, they are capable of lower heat, but they are also capable of close to the same amount of thermal output.

Keep in mind that most laptop parts are designed to sustain higher temperatures too, so the internal temps can be somewhat higher than desktops. Ever touch a powerbook after its been doing some computationally heavy thing? They get hot.

[newman]

I am aware of the crammed space inside laptops, but thanks for the explanation anyway :) That's the reason why laptops in general live shorter then desktops.. I still don't know what the "nominal" temp for a mobile CPU would be, however... 75 C still sounds a bit high to me, and his CPU fan seems to share that opinion, whether the report is accurate or not :)

Ever touch a powerbook after its been doing some computationally heavy thing?

As a matter of fact, I did.. reminded me when I accidentaly touched the engine exhaust on my old car by accident :D

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