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G750JX Help navigating BIOS, Booting without Display - Solved

AizuXO
Level 7
Hey!

BSOD and boot to BIOS resulted in a friend messing up BIOS settings and saving it. Now laptop boots without a working screen (external screen has the same problem). Funny thing is that this has happened before when I installed an SSD, the issue got fixed when I navigated blind in BIOS and changed "Secure Boot" and "Key Management" to default.

With help of videos and pictures that I found, I know how to navigate and change "Secure Boot" setting but I have a hard time finding how the "Key Management" option looks.
If any of you got this laptop series and can help out. I need a picture or a description of how the options look in "Key Management" tab.


PS: they keys there might be important, blur it out.


No, power cycling and clearing CMOS does not help or restoring BIOS to default.


From what I remember it looks similar to this:
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7 REPLIES 7

AizuXO
Level 7
Anyone with a G750 that can help me????

I need to enable Secure Boot and load defaults in Key Management to have a working internal/external screen.

If anyone can share a description/documentation of BIOS -> Security Tab -> Secure Boot ->/& Key Management.


-- Here is an example WITH mistakes cause I can not find a description or a picture or a video:


in "Secure Boot" window: 2 choices

First choice: "Enable Secure Boot", 2 options (enable/disable)
Second choice: "Key Management", enters a new window with 3 choices

- Choice 1 - "Default Key etc" has 4 options (disable/enable/restore/reset)
- Choice 2 - "Enroll All etc" opens a confirmations window (Yes/No)
- Choice 3 - "I Will Help" opens a confirmation windows (Yes/Yes/Yes/Maybe/Yes)


I am blind here 😞

navis995
Level 11
I'll record you my bios settings from g750jz.
I'll upload a video soon.
Asus Rog G750JZ
Screen: 1920x1080 17.3'
CPU: Intel® Core™ i7-4700HQ (3.4Ghz @ -70mV)
GPU: GeForce GTX 880M 4GB (OC +125Mhz Core, +600Mhz Memory @ 1.062V)
RAM: Samsung 32GB 1600MHz
Storage #1: Samsung Evo 840 250GB
Storage #2: Samsung Evo 850 500GB
Storage #3: Seagate Barracuda 2TB
Storage #4: Samsung Evo 128GB MicroSD

https://www.youtube.com/watch?v=8zrhTHrpIe0
Asus Rog G750JZ
Screen: 1920x1080 17.3'
CPU: Intel® Core™ i7-4700HQ (3.4Ghz @ -70mV)
GPU: GeForce GTX 880M 4GB (OC +125Mhz Core, +600Mhz Memory @ 1.062V)
RAM: Samsung 32GB 1600MHz
Storage #1: Samsung Evo 840 250GB
Storage #2: Samsung Evo 850 500GB
Storage #3: Seagate Barracuda 2TB
Storage #4: Samsung Evo 128GB MicroSD

navis995 wrote:
https://www.youtube.com/watch?v=8zrhTHrpIe0


I'll check it out. Thanks!

Gave it another go yesterday and solved it!
.
Problem wasn't with Key Management but with Launch CSM and Secure Boot Control.

The FIX: Disable "Launch CSM" in "Boot" and enable "Secure Boot Control" in "Security>Secure Boot menu". F10 to Save & Exit.


Lots of try and error to change those settings with no screen but it is doable with enough information.

The headache is in the "Boot" menu settings, if "Launch CSM" is enabled then it's the first option in the "Boot" menu. If "Launch CSM" is disabled then it's the second option after "Fast Boot".

Attached jpeg of how the settings look.

Thank you all for the help.

navis995
Level 11
I can already tell you I have different options avaible and I'm not sure the video will be of any help.
You need someone with same laptop.
Asus Rog G750JZ
Screen: 1920x1080 17.3'
CPU: Intel® Core™ i7-4700HQ (3.4Ghz @ -70mV)
GPU: GeForce GTX 880M 4GB (OC +125Mhz Core, +600Mhz Memory @ 1.062V)
RAM: Samsung 32GB 1600MHz
Storage #1: Samsung Evo 840 250GB
Storage #2: Samsung Evo 850 500GB
Storage #3: Seagate Barracuda 2TB
Storage #4: Samsung Evo 128GB MicroSD

navis995
Level 11
Also, your friend is an idiot.
Asus Rog G750JZ
Screen: 1920x1080 17.3'
CPU: Intel® Core™ i7-4700HQ (3.4Ghz @ -70mV)
GPU: GeForce GTX 880M 4GB (OC +125Mhz Core, +600Mhz Memory @ 1.062V)
RAM: Samsung 32GB 1600MHz
Storage #1: Samsung Evo 840 250GB
Storage #2: Samsung Evo 850 500GB
Storage #3: Seagate Barracuda 2TB
Storage #4: Samsung Evo 128GB MicroSD