G75vx BIOS 206 not booting from USB [solved]

[alphablue]

Hi I have a problem ever since I upgraded my G75vx BIOS to the newest version: 206 I couldn't boot from my USB ports no more. I restored setting to default but it didn't help. Is there a way to fix this or is there a way to downgrade because neither Easy Flash (from BIOS) nor WinFlash (from Windows) are allowing me to replace the existing BIOS with an older version.

[Clintlgm]

Yes hold down the Ctrl +Home key on a reboot hold it down until the original bios is installed.

This is based on the your C:\ drive still having the original bios file there in the root. If you have Clean Installed or deleted that file you will have to recreate it.

Download the downgraded Bios you want to install extract it to C: rename it G75.bin

[alphablue]

Clintlgm wrote:
Yes hold down the Ctrl +Home key on a reboot hold it down until the original bios is installed.

This is based on the your C:\ drive still having the original bios file there in the root. If you have Clean Installed or deleted that file you will have to recreate it.

Download the downgraded Bios you want to install extract it to C: rename it G75.bin

I have G75VX.bin in my C: drive which was hidden and its version 201. I tried to restart the system with ctrl+home pressed down but it didn't downgrade the BIOS. Can you please elaborate on the steps maybe I missed a step or something.

Prostar Computer wrote:
Did you check to see if Secure Boot was enabled (if applicable)? It needs to be disabled if you have the option for it.

I disabled Secure Boot but it didn't do the trick.

Kerly wrote:
Maybe your drivers are out of date?

I have the latest updates. ASUS Live Update is always on & so is Windows Update.

[Prostar_Compute]

Did you check to see if Secure Boot was enabled (if applicable)? It needs to be disabled if you have the option for it.

[Kerly]

Maybe your drivers are out of date?

[Pitcher1]

when you complete flash bios, did you load default in BIOS? when you press esc, can you see the device post?

[alphablue]

Pitcher@asus wrote:
when you complete flash bios, did you load default in BIOS? when you press esc, can you see the device post?

I tried "Restore Defaults" and F9 "Optimized Defaults" both didn't fix my problem. As for the ESC I get the following when I spam ESC before loading Windows

Option 1: Windows Boot Manager (P0: LITEONIT LCM-256M3S)
Option 2: UEFI: Flash Drive AU_USB2.0 8.07
Option 3: Enter Setup

Every time I pick option 2 the PC reads from my USB and redirects to the hard disk and loads Windows instead of booting from USB (Tiny Core Linux).

[cl-Albert]

alphablue wrote:
I tried "Restore Defaults" and F9 "Optimized Defaults" both didn't fix my problem. As for the ESC I get the following when I spam ESC before loading Windows

Option 1: Windows Boot Manager (P0: LITEONIT LCM-256M3S)
Option 2: UEFI: Flash Drive AU_USB2.0 8.07
Option 3: Enter Setup

Every time I pick option 2 the PC reads from my USB and redirects to the hard disk and loads Windows instead of booting from USB (Tiny Core Linux).

Have you tried to Enable 'Launch CSM' under your bios 'boot' settings too along with disabling secure boot?
You need to change both bios settings and should see another boot option for your flash drive that is non-UEFI after doing this that should allow you to boot to your USB drive.

You shouldn't need to downgrade your bios to fix this, but we can talk about this more if it's really necessary.

[alphablue]

cl-Albert wrote:
Have you tried to Enable 'Launch CSM' under your bios 'boot' settings too along with disabling secure boot?
You need to change both bios settings and should see another boot option for your flash drive that is non-UEFI after doing this that should allow you to boot to your USB drive.

You shouldn't need to downgrade your bios to fix this, but we can talk about this more if it's really necessary.

Hi Albert,
Sorry for the delay. Thank you for your advise. Enabling "Launch CSM" while disabling "Secure Boot" did the trick. I can now boot from USB and into my Linux OS 🙂

[cl-Albert]

Hi alphablue,

Glad to hear that worked and thanks a lot for letting us know what happened in case other customers run into the same problem :).