MSI GT73VR BIOS: unlock, mod, factory restore, clear CMOS and prevent common issues

Discussion in 'MSI' started by Paloseco, Jan 1, 2018.

  1. dzpliu

    dzpliu Notebook Consultant

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    you can actually skip the whole part about finding the BIOS LOCK if you know the secret hotkey for BIOS adminstrator mode.
     
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  2. Falkentyne

    Falkentyne Notebook Virtuoso

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    @dzpliu
    do you know anything about modifying the EC firmware without bricking the laptop?

    namely:
    These strings:

    CPU_CrtT = 1.CPU_ThtlT = 1.CPU_ThtlT = 0.SYS_CrtT = 1.SYS_ThtlT = 1.SYS_ThtlT = 0

    I need to change the CPU_Crt = 1 to 0 to avoid the ec shutting off the laptop, then i can do 5 ghz cinebench runs.

    Do you know anyone who knows how to edit without breaking checksum validation? Hex editing this will cause a brick (checksums, you know?)
    If anyone has a SPI programmer and can find the 128k EC flash chip and verify it (is it the PLcc8 chip behind the motherboard?)

    I attached the EC here btw
     

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  3. Paloseco

    Paloseco Notebook Evangelist

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    The bitlocker unlock key will also be required if you disable Secure Boot, but re-enabling if again in the BIOS it's just ok no need to touch anything. With linux you can use dislocker to unlock the partition with the password even with Secure Boot disabled.

    [​IMG]
     
  4. tiliarou

    tiliarou Notebook Consultant

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    So what is the "secret hotkey" for MSI bios ?
    The whole point of the thread is that we are not MSI engineers and we have to use what's available to us (unless this hotkeys are easy to find ?)...
     
  5. Falkentyne

    Falkentyne Notebook Virtuoso

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    It's been posted over on Baidu somewhere many months ago. And no one knows if it still works in the GT75 anyway. And it's easy and safe to unlock menus anyway. Just buy a SPI programmer if theres a problem and you can just force reflash the bios anyhow.
     
    Last edited: Apr 22, 2018
  6. dzpliu

    dzpliu Notebook Consultant

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    it is the same hotkey for every tested MSI laptop so far. (
    tested on G25, 16L1, 16L3, GT72, GT72S, G65.

    It is completely safe if you only edit out the parts that YOU KNOW WHAT YOU ARE DOING.

    Just like what the OP said, editting functions like the internal graphics will brick your machine, unlesss you do a NVRAM reset with holding the power on button for 30sec or removing the CMOS battery physically.
     
  7. Paloseco

    Paloseco Notebook Evangelist

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    I can confirm it works. You need to press 4 keys: 3 at the same time and then a 4th to switch basic/advanced view while the others are still pressed. The keys are not numbers or symbols.
     
  8. tiliarou

    tiliarou Notebook Consultant

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    Thanks to both of you, but then why not posting the actual key sequence ? lol :)
    Or it isn't allowed here ? Can you send it by private message then ?
    I have a GT72 2QE and would like to try.
     
  9. Paloseco

    Paloseco Notebook Evangelist

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    We are afraid that if it's made public future computers won't use the same combination or disable it at all.
     
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  10. Falkentyne

    Falkentyne Notebook Virtuoso

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    Yeah that's pretty much it. Plus that's the only way (besides manually unlocking menus which poses some risk but zero if you have a SPI flasher like a Skypro) to remove MSI's vid boosting and stop the laptops from overheating (although bad Lairdtech paste jobs and convex heatsinks may still need repasting or sanding; because MSI uses the EXACT SAME heatplate block ever since the GT72 (only heatpipe patterns and directions are different but the same 3 main heatpipes for several years. The GPU plate is nice and flat but the CPU plate is extremely convex).

    As I said you can find it on baidu. (the fourth key on the GT72 2QE is different than on newer laptops) Just don't post the key combination when you do.
    Then go to CPU VR Settings and set core IA AC DC loadline to 1 to remove MSI overvoltage boosting, but you will then have to fine tune your adaptive and static voltages again as your old settings will now be unstable.

    (6820HK systems should set this to 5, apparently there is massive vdroop that 7820HK systems dont have).
     
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