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Thread: Asrock B75M-GL R2.0 Wrong Temp. Sensor

  1. #1
    dhelazt is offline Junior Member
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    Default Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Hy Everybody...

    I have a problem with my mainboard, hardware monitor reporting very high temperature on MB Temperature and Processor. But, AXTU reporting correct temperatures. Even Hardware Monitor in BIOS/UEFI reporting wrong temperature on MB Temp. Sometime my PC shut down suddenly when i playing a game like Far Cry 3. This is screen shot from my PC, show different temperature report :
    Name:  Untitled.jpg
Views: 341
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    My PC Specification :
    Intel Core I3 2100
    Asrock B75M-GL R2.0 (Bios P1.50)
    2 X 2GB DDR3
    Sapphire HD7790
    Corsair CX500

    Thanks

  2. #2
    parsec's Avatar
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    First, some of the temperatures shown by Hardware Monitor Pro are wrong as you said. That program does not know which temperature sensors are really being used, so ignore the CPUTIN, SYSTIN, etc. If they were right your PC would either be damaged or would shut down even at idle.

    You can see that the CPU temperature in AXTU matches the Core temperatures in Hardware Monitor Pro, so HW Pro is correct about that.

    What temperatures are you seeing in the UEFI/BIOS?

    Try this program for checking your system temperatures and many other readings: HWiNFO, HWiNFO32/64 - Download

    The power supply voltage readings in AXTU are very high, to high if they are correct, and out of spec. See what HWiNFO64 shows for those voltages.

    Also, HWiNFO will show some sensors that are not used, just like HW Pro, but most of them will be correct.

    IMO, 37C for the CPU temp for your CPU is high, what are you using for a CPU cooler? What PC case are you using?

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    Joe-912's Avatar
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Blimey, is that vcore voltage right ? 2.040v at 1600.00MHz

  4. #4
    - wardog -'s Avatar
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Quote Originally Posted by Joe-912 View Post
    Blimey, is that vcore voltage right ? 2.040v at 1600.00MHz
    Heh, not only that but look at 3.3v, 5v, and 12v.

    Something's amiss there.
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    dhelazt is offline Junior Member
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Quote Originally Posted by parsec View Post
    First, some of the temperatures shown by Hardware Monitor Pro are wrong as you said. That program does not know which temperature sensors are really being used, so ignore the CPUTIN, SYSTIN, etc. If they were right your PC would either be damaged or would shut down even at idle.

    You can see that the CPU temperature in AXTU matches the Core temperatures in Hardware Monitor Pro, so HW Pro is correct about that.

    What temperatures are you seeing in the UEFI/BIOS?

    Try this program for checking your system temperatures and many other readings: HWiNFO, HWiNFO32/64 - Download

    The power supply voltage readings in AXTU are very high, to high if they are correct, and out of spec. See what HWiNFO64 shows for those voltages.

    Also, HWiNFO will show some sensors that are not used, just like HW Pro, but most of them will be correct.

    IMO, 37C for the CPU temp for your CPU is high, what are you using for a CPU cooler? What PC case are you using?
    This Screen Shot from my Bios :
    Name:  aa.jpg
Views: 215
Size:  133.5 KB
    It report high temperature and show very high voltage. But, i've try using digital mutimeter to measure the voltage and it seems the voltage is fine. 12V rail reported 12.1V on idle and drop to 11.97 at high load. HWInfo64 can't read voltage sensor, just like another hardware monitoring.

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    dhelazt is offline Junior Member
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    This is my HWInfo screen shot :
    Name:  a.png
Views: 232
Size:  61.3 KB
    I'm using DeepCool Gammax S40 CPU Cooler and Dazumba D-Vito 902 Case. CPU Fan run at ~900RPM.
    Last edited by dhelazt; 03-20-2014 at 08:20 AM.

  7. #7
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Dazumba D-Vito 902 Case. I like that hot bay this case has on top.

    120mm fans galore, 5 of 'em come with, but where are you powering them from? The MB's pins using splitters, or direct from the PSU?

    In the BIOS, what's the vCore set at? Suspiciously, in those screenies it isn't budging one way or the other. Just sitting there rock solid like.

    Down in the lower right corner of the MB and above the SATA ports is a white sticker. What does it all say that's printed on it?

    Lastly, is that S40 cooler by chance resting against the memory? Or anything else in the case?

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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    And is this a new build or one that been running for some time now?

  9. #9
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Quote Originally Posted by dhelazt View Post
    This is my HWInfo screen shot :
    Name:  a.png
Views: 232
Size:  61.3 KB
    I'm using DeepCool Gammax S40 CPU Cooler and Dazumba D-Vito 902 Case. CPU Fan run at ~900RPM.
    I think the hardware sensor chip on your board has gone bad, or if you just got this board the sensor chip is defective. Your CPU would be destroyed with 2V. A few of the readings are right, but only those taken directly from the CPU, anything that is measured or controlled by the mother board is wrong. I've never seen this before.

    Either return the board to the retailer, or RMA it to ASRock.

  10. #10
    dhelazt is offline Junior Member
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    Default Re: Asrock B75M-GL R2.0 Wrong Temp. Sensor

    Quote Originally Posted by - wardog - View Post
    Dazumba D-Vito 902 Case. I like that hot bay this case has on top.

    120mm fans galore, 5 of 'em come with, but where are you powering them from? The MB's pins using splitters, or direct from the PSU?

    In the BIOS, what's the vCore set at? Suspiciously, in those screenies it isn't budging one way or the other. Just sitting there rock solid like.

    Down in the lower right corner of the MB and above the SATA ports is a white sticker. What does it all say that's printed on it?

    Lastly, is that S40 cooler by chance resting against the memory? Or anything else in the case?
    Only 2 Fan get power from MB, and another FAN connected directly to PSU. All Voltage set to Auto, no OC. white sticker show bios Version and this my PC :
    Name:  1982329_10200746436903767_1494893199_n.jpg
Views: 197
Size:  46.4 KB

    Quote Originally Posted by parsec View Post
    I think the hardware sensor chip on your board has gone bad, or if you just got this board the sensor chip is defective. Your CPU would be destroyed with 2V. A few of the readings are right, but only those taken directly from the CPU, anything that is measured or controlled by the mother board is wrong. I've never seen this before.

    Either return the board to the retailer, or RMA it to ASRock.
    I think the sensor is gone bad, because first time i get this MB everything is fine. It's happen after i replace my old Corsair VS450 with Corsair CX500 and the sensor report incorrect values. Some hardware monitor like AIDA64 reporting correct voltage, at 1600MHz just 0.9V and at full load around 1.1-1.2V. I think this problem caused by bad sensor. One last question, this MB use Nuvoton NCT6776D but all hardware monitoring detect it as NCT6776F

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