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G75VW VBios Help

0neWinged
Level 9
Alright so I have an Asus G75vw with a GTX 660m. I bought a GTX 780m and heatsink from a G750jh. I did some chassis modifications and managed to get everything to fit. Flashed new bios with vbios of 660 and 780.
I turned off UEFI prior to flash, turned UEFI off prior to card swap. Laptop fired up, but boots to Asus boot logo screen, (where you would normally access bios) but gets stuck. I cannot access bios. Trouble shooted a few things, but still no luck. Even swapped back to the 660m and boots passed the boot screen. So I then re flashed to my stock bios, and tried swapping to 780m to see if it wouldn't show the boot screen, but it does the same thing.
So.. From what I am told it is trying to load the VBIOS onboard of the 780M PCB. Also was told It definitely is a module regarding PEG control. This should be in the unlocked "Chipset" tab, but as I've mentioned a while back, this is where things can bjork the boot block and even the recovery block if a setting you enable is deep BIOS disabled.. (no supported callback module) meaning, ICSP programmer is the only way out of it. (Don't want to brick or have to find a ICSP programmer).
Any insight would be appreciated. I also have this up at WIN RAID forum as well, but figured it can't hurt to have more eyes and brains.
In the end, I just want this thing to recognize the 780 as its card and boot. I already have modified drivers, just need a successful boot.
Anyone willing to help with this modification will be highly highly appreciated.
Thanks!
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22 REPLIES 22

Dreamonic
Level 12
Nice! The bread tie was the chosen one.

Still try the method above despite what you read below.

What is interesting is that the G75's 660M and 670MX cards used RT9018 (voltage regulator) chips in that same location: http://html.alldatasheet.net/html-pdf/207896/RICHTEK/RT9018A/294/1/RT9018A.html

This means those cards have absolutely no BIOS chip onboard the PCB at all. This means further investigation into the system BIOS since initial methods of VBIOS insertion (OROM) WILL NOT WORK now under any circumstances if upgrading to GPUs with the VBIOS onboard.

Dreamonic
Level 12
That's absolutely a breakthrough buddy! The time being, do some tests and monitor temps and voltage first then plan on making a permanent bridged connection.

EDIT: It looks like the modules for MXM GPU > OROM can still be successful even with VBIOS onboard the GPU already. This means a lot more GPU upgrading opportunities than ever before now.

Let me know how the rest goes!

Dreamonic wrote:
That's absolutely a breakthrough buddy! The time being, do some tests and monitor temps and voltage first then plan on making a permanent bridged connection.

EDIT: It looks like the modules for MXM GPU > OROM can still be successful even with VBIOS onboard the GPU already. This means a lot more GPU upgrading opportunities than ever before now.

Let me know how the rest goes!



Absolutly! I started a new thread based on success story since this is no longer a Deep bios mod required.
Ill be doing some tests and follow up with some serious information and benchmarking.