XMG U705 EC Firmware Panic! HELP...

Discussion in 'Sager and Clevo' started by johnbb, Sep 29, 2018.

  1. johnbb

    johnbb Notebook Consultant

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    Hi everyone,
    I deeply need your help as I have a strange problem with my XMG U705 (Clevo P771ZM):
    When you turn it on, after 25 to 30s, fans start to blow at full speed and all the leds come on with a loud beep repeating every 2 or 3s until laptop auto shutdown.
    I tried to do EC Firmware reset --> no joy.
    I tried different CPU, GPU, RAM --> no joy
    I tried to swap gpu & cpu fans --> no joy
    I also tried fans from another clevo laptop --> no joy

    For the records, I have BIOS 1.05.01a and EC 1.05.01

    Do you have any idea?
    Should I try to flash again the EC Firmware or try another version (Clevo?)
    Thanks
     
  2. Danishblunt

    Danishblunt Notebook Virtuoso

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    Graphicscard is dead.

    edit: nvm, seems you tried different GPU. Well seems like dead board :/

    lately LGA haswell mainboards from P77x series seem to drop like flies.
     
  3. johnbb

    johnbb Notebook Consultant

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    dead EC chip? Could that be replaced?
    Should I try to re flash it first?
    Could try to revert to an earlier version...
     
  4. Danishblunt

    Danishblunt Notebook Virtuoso

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    highly doubt the EC chip is broken. Maybe the GPU slot or so.
     
  5. johnbb

    johnbb Notebook Consultant

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    But I still have video output on internal screen.
    The laptop is working perfectly except that after 30s, it starts to beep loudly.
    It looks like some kind of temperature sensor has gone rogue... Or the rpm signal of the fan is not working anymore... Thus triggering the EC panic mode.
     
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  6. johnbb

    johnbb Notebook Consultant

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    I tried today to disassemble and reassemble every bit of the laptop.
    I've tested with keyboard uplugged also, and with another wifi m2 card --> no joy
    I'm pretty sure now it's the motherboard that's involved now.
     
  7. XMG

    XMG Company Representative

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    Are you still in warranty (I assume not, but if you had a 3 year warranty then it could still be covered) and if so have you contacted our support department yet?

    You can download all the BIOS, EC and drivers directlythrough our website - 1.05.01 looks like the most up to date, but I haven't hecked the Clevo website - only ours. Chances are that if there is a more up to dateversion on the Clevo website for a model which is several years old, we didn't offer it ourselves as either our version was custom (fan curves on the EC for example) or it had negligable updates.
     
  8. johnbb

    johnbb Notebook Consultant

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    Hi,
    Thanks for the reply.
    No, unfortunately I'm out of warranty... I've already sent the laptop in RMA to your support department and they were not sure whether it was the GPU or the motherboard.
    Anyway, they did not have any P771ZM motherboard in stock so I'm pretty much doomed unless I can find one elsewhere.
    I tried to contact PCspecialist but they wouldn't sell me one as I did not buy the laptop from them.
    Found one on aliexpress but the price is ridiculously high (about 350€)...
     
  9. johnbb

    johnbb Notebook Consultant

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    Does anyone know if you can trick the temp sensor on the MXM port with a fixed temperature to prevent the EC panic mode and ultimately the quick shutdown?
     
  10. Meaker@Sager

    Meaker@Sager Company Representative

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    It would be a somewhat complicated physical mod.
     
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