Question Gigabyte X570S Aorus Master - can't get into BIOS

Chriz · Jun 3, 2022

I just built a new PC with a Gigabyte X570S Aorus Master. I was able to get into the BIOS on first bootup, but after that the only way I can get into the BIOS is to clear the CMOS with the handy button on the back, then it lets me go in one time. If I try to go in again after that, it just kind of locks up I guess you could say? For example, if I tell Win10 to restart into BIOS through the recovery screen, it restarts and eventually just stops the boot process and my monitors go to sleep. Not sure if it's actually in the BIOS at that point and I just can't see it, or if it's just locked up somewhere. Same thing happens if I try to get in by mashing the DEL key on bootup. Anyone experience this before? Any tips?

RLGL · Jun 8, 2022

Have you tried the latest drivers for the card from the Nvidia website? Also, I remember when I set this rig up, I had to switch from one cable type to another to get the displays to work correctly. Another thing, there are many inferior cables on the market, I have had bad cables in the past.

igor_kavinski · Jun 8, 2022

BIOS/POST not showing on display port monitor

Hey guys. I got a Asus Rog Swift monitor a some months ago now, and I noticed that when I turn my PC on, it won't display the POST/BIOS screen. It won't show anything until the OS is booted. Is there a BIOS settings I have to adjust or maybe something I have to enable on my video card...

forums.guru3d.com

In the motherboard BIOS settings under the BOOT menu (on my board) there is an option called "CSM (Compatibility Support Module)". This is Enabled by default. Changing this to Disabled instantly fixed the issue. You may want to also try 'Auto' in case you have other non-UEFI devices connected but this may not work, it didn't for me.

Under your bios boot menu go to your "Boot from PCI-E/PCI Expansion Devices"

Select -> "UEFI Driver first" in the drop-down menu and you're done!

Do any of these work for you?

Chriz · Jun 8, 2022

I partly figured out the problem after trying a ton of things. Whenever I enabled Resizable bar in the BIOS, it would automatically disable CSM support without telling me (apparently CSM support has to be disabled for the resizable bar to fully work). Re-enabling CSM support allows me to see the BIOS with DisplayPort. Very odd thing. With CSM Support enabled the Resizable bar says it's not enabled in GPU-z and the Nvidia control panel.

igor_kavinski said:
BIOS/POST not showing on display port monitor

Hey guys. I got a Asus Rog Swift monitor a some months ago now, and I noticed that when I turn my PC on, it won't display the POST/BIOS screen. It won't show anything until the OS is booted. Is there a BIOS settings I have to adjust or maybe something I have to enable on my video card...

forums.guru3d.com

Do any of these work for you?

Weird that enabling CSM support worked for me, which is the exact opposite of what you're saying here.

As for the other setting, I could not find a "Boot from PCI-E/PCI Expansion Devices" or "UEFI Driver first" anywhere in the BIOS.

igor_kavinski · Jun 9, 2022

Chriz said:
Re-enabling CSM support allows me to see the BIOS with DisplayPort. Very odd thing.

Great work. Maybe you can ask Gigabyte support about this now? They may have a technical reason for doing this or it may just be a bug, in which case maybe they can fix it in the next beta BIOS.

Muadib · Jun 9, 2022

With my last Gigabyte board, it would only go to the Bios, if I held the DEL button right after powering the PC, and only releasing it once I was in the Bios.

washburn100 · Aug 7, 2023

I see this is an old thread, but I am having the exact same issue. Did you ever find a solution?

AnitaPeterson · Aug 9, 2023