Z97E-ITX/AC Bifurcation

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   Check the device ID for the unknown device in device manager to make sure it's
actually the GPU. If you don't know how there is a video here. If it is in fact the GPU
then all I can suggest is trying to download and install older drivers going back
until you find one that works. 

I would suggest manually installing the driver but with GPUs I find that very often
causes system freezes and a failure to load the OS so I wouldn't recommend it.

If you have not already tried, remove the GPU from the system and clean the contacts etc.
I am pretty sure it won't make a difference but it's worth a shot. If possible
try it in the second PCIe slot on your riser. 

Failing all that, go ahead and open a ticket.

Good luck, I have my fingers crossed for you 

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Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 27203	Post Options Post Reply Quote Xaltar Report Post Thanks(1) Quote Reply Posted: 1 hour 49 minutes ago at 12:56am
	Check the device ID for the unknown device in device manager to make sure it's actually the GPU. If you don't know how there is a video here. If it is in fact the GPU then all I can suggest is trying to download and install older drivers going back until you find one that works. I would suggest manually installing the driver but with GPUs I find that very often causes system freezes and a failure to load the OS so I wouldn't recommend it. If you have not already tried, remove the GPU from the system and clean the contacts etc. I am pretty sure it won't make a difference but it's worth a shot. If possible try it in the second PCIe slot on your riser. Failing all that, go ahead and open a ticket. Good luck, I have my fingers crossed for you


ClayFace Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 Jul 2025 Status: Offline Points: 120	Post Options Post Reply Quote ClayFace Report Post Thanks(0) Quote Reply Posted: 57 minutes ago at 1:48am
	Cool, thats super good info. The Device ID is: PCI\\VEN149D&DEV_0102&SUBSYS_000149D&REV_01... Vendor = 149D Developer = 0102 This is the same as the information/ ID referenced in all the docs that I have been reading and trying to download for the past days, so I'm pretty certain that it has to be NVidia.. I'll try to manually update/ install the driver tonight and if that does not work, then I'll create a ticket tomorrow with the support team. Again, I cant thank you enough for your support...

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 27203	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 9 minutes ago at 2:36am
	Damn, hate to break it to you but Vendor = 149D Developer = 0102 is Newtek, so not the GPU. Looks like you will need to get ASRock's tech department to help out with the BIOS. If you remember the version you were on before you could always try flashing back to that but it will be better if you can get them to send you a modded version of the latest BIOS that enables bifurcation. Sorry I couldn't be of more help.