if you find the controls in the bios could you then tell me where to look for them to enable the exact parameters?
- Edit - OK, yes, due to this mod, by default, I have given you access to the full chipset menu. The only options you have is at OC >> Chipset >> System Agent Config >> PEG Port Configuration >> PEG xxxx you can set Max Width for slots, but that is all (No bifurcation controls)
I looked in all hidden areas of the BIOS, there is no bifurcation controls in this BIOS, so you only get what is enabled by default
Sorry, there is no way I can find and change these since itās removed from BIOS.
Test each slot, maybe you will find one that will allow all three to function, but usually if auto is set then it probably choose only 2 like 8x8x or 4x4x etc
Bug MSI in email, see if they will make you BIOS with bifurcation control options visible, or at least 4x4x4x4x enabled on one slot.
Hi I exposed to msi the problem letās see if we can solve it
Good luck, hopefully since this is commonly needed now by many users, they will add to BIOS and give you new release (especially since this is not low-end model board!)
Sorry please this bios for vga gigabyte 1080ti extreme gaming 11gb https://download.gigabyte.com/FileList/Bā¦-N108TAXF3P.zip uograde please gop drive and works fine in debug mode without crashing why? do you have solution?
@forzic17 - Did you test CSM enabled (legacy vBIOS will be used) and CSM disabled (ONLY UEFI GOP vBIOS will be used)?
Please dump your vBIOS with GPU-z and send to me, I cannot find vBIOS in those files you linked.
you can list the file for z390 tomahawk thanks
Well thatās a crap site! Files supposed to remain for long time, and dead already after less than a month!
Thanks for notice @forzic17 - links updated above #18 
Hello everyone how to update Gop drive vga vega 64 bios? update AMD GOP 2.9 please for https://www.techpowerup.com/vgabios/2024ā¦8192.180110.rom
Thanks
Hi! Thanks for your effort on these mods.
Could you re-up 7b12v16 for z390 meg ace with chipset unlock and HPET force disabled?
Links are dead. Thanks very much!
Also question: The chipset section exposed, are these all the hidden entries MSI by default hides from us? or is there potentially more to unlock? I found a lot of interesting settings so far.
@MT1 - yes, more stuff is hidden, but you get plenty with chipset revealed. If you need something specific let me know and I will look into other mod for you
New links added at post #8, thanks for letting me know they were down!
Thanks man! Really appreciated!
Canāt really think out of my head that I require right now, but just curious if there are any things related to APIC/Interrupts? I could only find one (Logical Interrupt Redirection I think it was called)
@MT1 - Youāre welcome! Sorry, I donāt know about those settings or what they might be named in this BIOS, or what may be near/related etc, check IFR and see what you find
Sorry please bios mod chipset Hpet for new bios Msi z390 Ace http://download.msi.com/bos_exe/mb/7B12v18.zip
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Thanks
@forzic17 - So you just need HPET disabled mod BIOS v18 for MSI z390 ACE, correct? If not, and you want Chipset mod too, youāll have to wait, that takes me a few hours sometimes.
So please clarify, what is your goal, only HPET disabled takes me a few minutes, chipset mod takes long time and youāll have to wait until I have time to redo on V18 << Not worth this, if your only concern is to disable HPET
* Edit - @forzic17 - Here you go - MSI Z390 MEG ACE v18 HPET / Chipset Mod - http://s000.tinyupload.com/index.php?filā¦671683659741619
"Chipset" added at top of OC section, inside you will find HPET at following location
OC >> Chipset >> PCH-IO Configuration >> HPET
Flash via M-Flash, load optimized defaults after flash, save, reboot back to BIOS to make all changes
@forzic17 - Sorry!! I thought I posted this reply and file for you yesterday when I replied to that PM and said See thread for link! 
Here is v19 mod BIOS - Changes and flash info same as above ^^
https://ufile.io/6msse9wg