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CPU overheating error.

When I start up my PC I get the BIOS warning that the CPU is running to hot. This even after having the system off for the full night. The temperature that the BIOS shows is around 99 c yet the fan is blowing full and the heatsink is cool to the touch. So I think the CPU is actually not that hot.

Any tips on how to fix it?
7 answers Last reply Best Answer
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  1. Hi Jimzeel

    Best to verify the warning with other software. Install a temp monitor like HwMonitor:
    http://www.cpuid.com/softwares/hwmonitor.html

    Or RealTemp:
    http://www.techpowerup.com/downloads/SysInfo/Real_Temp/

    Monitor the temps and if they aren't as the bios claims update the bios.
  2. Pibee said:
    Hi Jimzeel

    Best to verify the warning with other software. Install a temp monitor like HwMonitor:
    http://www.cpuid.com/softwares/hwmonitor.html

    Or RealTemp:
    http://www.techpowerup.com/downloads/SysInfo/Real_Temp/

    Monitor the temps and if they aren't as the bios claims update the bios.


    BIOS has been up to date for quite a while and also verified the temperature with RealTemp wich also shows the same 99c temperature.
  3. Jimzeel could you list your hardware please.
  4. Pibee said:
    Jimzeel could you list your hardware please.


    ASUS Maximus Formula
    Intel Core 2 Duo E8400 with stock cooler
    4 Gb RAM
    Win Vista
  5. Best answer
    Unless I'm mistaken your chip is in a list of chips that have exhibited temperature sensor issues in that the sensors get stuck. If that's in fact the correct call you can't un-stuck them. The alternative is to install an external temp monitor. Your cool to the touch test is a good indicator that the problem is reading and not actual high temps. Finally I did once come across a board modification that explained how to sever the inboard sensor path if the warning based on the faulty 99C prevents you from booting however I don't have that bookmarked so if needed you'll need to do a search and preferably for your board specifically.

    http://www.tomshardware.co.uk/intel-dts-specs,news-29460.html
  6. Pibee said:
    Unless I'm mistaken your chip is in a list of chips that have exhibited temperature sensor issues in that the sensors get stuck. If that's in fact the correct call you can't un-stuck them. The alternative is to install an external temp monitor. Your cool to the touch test is a good indicator that the problem is reading and not actual high temps. Finally I did once come across a board modification that explained how to sever the inboard sensor path if the warning based on the faulty 99C prevents you from booting however I don't have that bookmarked so if needed you'll need to do a search and preferably for your board specifically.

    http://www.tomshardware.co.uk/intel-dts-specs,news-29460.html


    Thanks for that info.
    Guess not much can be done then.
    Oh well, it is an old PC wich needed replacement anyway. Guess nows the time for that.
  7. Sorry to be the messenger of bad news.

    Cheers Jimzeel
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