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    P170HM - Blank Screen During POST

    Discussion in 'Sager and Clevo' started by zacpack, Sep 7, 2018.

  1. zacpack

    zacpack Newbie

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    Hi

    I have a Clevo P375SM-A and the laptop screen does not work during the POST/BIOS screen unless an external monitor is connected, once the laptop is booted into Windows it works perfectly fine and both Laptop and external monitors work.

    Has anyone got any clues on how to make the Laptop screen work during POST/BIOS?

    Many Thanks,
     
    Last edited: Sep 12, 2018
    zacpack, Sep 7, 2018
    #1
  2. Prostar Computer

    Prostar Computer Company Representative

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    Do you happen to know which BIOS version you're on? And which version of Windows?
     
    Prostar Computer, Sep 7, 2018
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  3. Meaker@Sager

    Meaker@Sager Company Representative

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    Have you replaced the GPU?
     
    Meaker@Sager, Sep 8, 2018
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  4. zacpack

    zacpack Newbie

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    zacpack, Sep 9, 2018
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  5. Danishblunt

    Danishblunt Guest

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    remove BIOS battery and reset EC, then try again. It's certainly a weird issue you're having.
     
    Danishblunt, Sep 10, 2018
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  6. zacpack

    zacpack Newbie

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    Thanks - how do I reset the EC?
     
    zacpack, Sep 10, 2018
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  7. Meaker@Sager

    Meaker@Sager Company Representative

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    By removing ac and main system battery. The bios battery would reset the CMOS (bios) as well and you would have done a bios + EC reset.
     
    Meaker@Sager, Sep 11, 2018
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  8. zacpack

    zacpack Newbie

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    Thanks, first things first, I mentioned the wrong Clevo machine, I have a P375SM-A. I've corrected the main message but unable to correct the title.

    Secondly, I've removed the battery and CMOS battery for at least 2 hours and reconnected them both, still no change. The laptop display does not work in POST only when it gets to Windows does it work.

    So in order for me to access any BIOS settings I have to connect an external monitor.

    I think it probably needs a new graphics card, any recommendations for where to get it one?
     
    Last edited: Sep 15, 2018
    zacpack, Sep 15, 2018
    #8
  9. Meaker@Sager

    Meaker@Sager Company Representative

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    It's more likely a vbios issue. However with a bit of modding of the cooler the GTX 1060 performs pretty well.
     
    Meaker@Sager, Sep 15, 2018
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  10. zacpack

    zacpack Newbie

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    Thanks - the current vbios is as attached. Know how to re-flash / update it?
     

    Attached Files:

    zacpack, Sep 15, 2018
    #10
  11. Meaker@Sager

    Meaker@Sager Company Representative

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    When did the issue start exactly? Some piece of firmware must have been updated as the stock should not do that.
     
    Meaker@Sager, Sep 15, 2018
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  12. zacpack

    zacpack Newbie

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    I have to admit, it's been a long time, so I don't recall what exactly happened and when it did.

    I haven't been using it until recently, so it's become more noticeable. I have formatted and reinstalled Windows from scratch, hence the BIOS issue as had to enable settings there for UEFI and Secure Boot.
     
    zacpack, Sep 16, 2018
    #12