Z170 MB - Clear CMOS to Switch to OnBoard Graphics

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   Dear QWIKAG,

Thanks for posting!

Once clear CMOS and if the system does not detect the dGPU, the system will boot from the iGPU.

When a dGPU is installed on the system. 
The system will detect a graphics card is installed, which will automatically turn the monitor from the dGPU.

If you would like to change to iGPU while dGPU is installed, kindly go to the following path to change the Primary Graphics Adapter settings.
BIOS\Advanced\Chipset Configuration\Primary Graphics Adapter\Onboard.

If you are not able to see the monitor from the dGPU and unable to change the settings, please remove the graphics card to check if the system can boot without the dGPU.

If the system can boot from iGPU without the dGPU, please check what can be the cause of unable to boot from dGPU by the following steps:
1. Please install the graphics card to different slots to see if it is PCIe slots related.
2. Please check the graphics card on a different system to see if the graphics card is working. 

With thanks,
ASRock TSD

Edited by ASRock_TSD - 18 Dec 2020 at 3:49pm

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ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Topic: Z170 MB - Clear CMOS to Switch to OnBoard Graphics Posted: 18 Dec 2020 at 3:34pm
	Dear QWIKAG, Thanks for posting! Once clear CMOS and if the system does not detect the dGPU, the system will boot from the iGPU. When a dGPU is installed on the system. The system will detect a graphics card is installed, which will automatically turn the monitor from the dGPU. If you would like to change to iGPU while dGPU is installed, kindly go to the following path to change the Primary Graphics Adapter settings. BIOS\Advanced\Chipset Configuration\Primary Graphics Adapter\Onboard. If you are not able to see the monitor from the dGPU and unable to change the settings, please remove the graphics card to check if the system can boot without the dGPU. If the system can boot from iGPU without the dGPU, please check what can be the cause of unable to boot from dGPU by the following steps: 1. Please install the graphics card to different slots to see if it is PCIe slots related. 2. Please check the graphics card on a different system to see if the graphics card is working. With thanks, ASRock TSD Edited by ASRock_TSD - 18 Dec 2020 at 3:49pm

QWIKAG Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Nov 2017 Location: Auckland Status: Offline Points: 5	Post Options Post Reply Quote QWIKAG Report Post Thanks(0) Quote Reply Posted: 18 Dec 2020 at 5:44am
	@ASRock_TSD Hi ASRock Support, This does not solve a problem where the user does not have a dedicated GPU. if some clears the BIOS CMOS, and they don't have a dedicated GPU, they are in a BRICKED STATE. My Motherboard (extreme 4 Z270) resets the BIOS setting to dGPU and iGPU does not work, after a Clear of the BIOS CMOS. Hence I cannot even get back into the BIOS to change it, because I do not have a screen. Do the BIOS defaults need to be stored somewhere so that when the BIOS CMOS is cleared, it reverts to a more simple default setup using iGPU? Or do I always have to have a dGPU lying around ready for this situation. In which case I might as well just install the dGPU and never use the iGPU, making the iGPU completely redundant. There are so many questions out there asking why they have a blank screen, and not one forum answers the question. Maybe you guys could go through and update these forums with some more detail.
	Fatal1ty z370 Gaming-itx/ac

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 13 Mar 2018 at 2:45pm
	Dear Neil_h, Thank you for choosing ASRock. Regarding your case, BIOS default setting is display from PCIe graphics card. If you want to display from onboard graphics, please remove the graphics card or set the primary graphics adapter from PCI Express to Onboard. BIOS Path: Advanced > Chipset Configuration > Primary Graphics Adapter Thank you! Yours truly, ASRock TSD

neil_h Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Mar 2018 Status: Offline Points: 3	Post Options Post Reply Quote neil_h Report Post Thanks(0) Quote Reply Posted: 13 Mar 2018 at 4:02am
	Hi, My graphics card has crashed. I've tried to reset my CMOS so that I can use my onboard graphics card but nothing seems to work. I don't have another PCIE graphics card and I continuously get a "99" error after I reset bios. (99 = PCIe slot issue). How do I get my PC to boot up without PCIe graphics if the clear CMOS won't work? I've cleared by removing the battery, using the clear CMOS jumper and the clear CMOS button at the back of the MB. Thanks in advance!