![]() HDMI works fine, able to see my post screen and RAID screen show up and enter the BIOS fine. Once in Windows I'm all good 1440p 144Hz with G-Sync. The monitor shows a black screen until it boots into Windows. I cannot see the post screen or get into the BIOS when using displayport. Hey guys, so I've looked all over the web and it seems people are having similar issues. 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. ![]() Changing this to Disabled instantly fixed the issue. In the motherboard BIOS settings under the BOOT menu (on my board) there is an option called "CSM (Compatibility Support Module)". After some research and trial and error I came across a very simple solution. Apparently the graphics card prioritises the connections in this orderĪfter a while rotating my head to read the BIOS screen I decided enough was enough. The BIOS POST and setup screens would only ever show on the monitor connected via DVI. To be honest I would have done this anyway as it reduces boot time quite a bit. If you don't have a UEFI setup I'm not sure what you can do other than to reinstall Windows in UEFI mode on a clean disk/partition. NOTE: You must have a UEFI setup, if you have an older legacy non-UEFI setup then this will not work. Motherboard is ASUS Z270-P but I know from others that this will work on other boards. My old 24" monitor on DVI ( in portrait mode to make matters worse!) and a 27" 2K on Display Port connected to my EVGA GTX 970. DVI -> HDMI - > DPīut depending on your motherboard and UEFI setup you can fix it. The issue is that NVidia cards prioritise the ports in this order.
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