HP DV6-3064ca BIOS modding difficulties

Discussion in 'BIOS Mods' started by Gadorach, Mar 17, 2019.

  1. Gadorach

    Gadorach MDL Novice

    May 19, 2011
    4
    4
    0
    #1 Gadorach, Mar 17, 2019
    Last edited: Mar 17, 2019
  2. Gadorach

    Gadorach MDL Novice

    May 19, 2011
    4
    4
    0
    CMOS reset will not work, as variables are stored in non-volatile memory it seems. Here's the exact order for switching from dGPU to iGPU in button combinations to recover the display:

    !!!!!!NOTE!!!!!!
    DO NOT attempt to do a BIOS recovery with the original BIOS. You will lose the advanced menu access, and the laptop will be permanently crippled to only being able to boot from the dGPU with the MUX locked to the iGPU. You will never get your display mode back. Keep the hacked BIOS in order to use the next steps for recovery.

    [ESC] (multple times at boot, best to keep pressing it rapidly for a good 10-15s to be sure)
    [F10]
    --Wait 5 seconds
    [Up Arrow] (If there's a BEEP, you're on the right track)
    [ESC]
    [Right Arrow]
    [Right Arrow]
    [Down Arrow]
    [Down Arrow]
    [Down Arrow]
    [Down Arrow]
    [Enter]
    [Enter]
    [Up Arrow] (If you set it as dGPU, else, [Down Arrow] if you set it to Auto)
    [Enter]
    [ESC]
    [Right Arrow]
    [Right Arrow]
    [Enter]
    [Enter]

    The laptop should reboot at this point, or hang. If it hangs, just hold the power button until it turns off, then turn it back on. The iGPU should recover the display and everything should be working again at this point.
     
  3. Gadorach

    Gadorach MDL Novice

    May 19, 2011
    4
    4
    0