Having a really strange issue with the BIOS and wanted to see what others thought. I have done the latest BIOS update from the site before anyone asks.

My system is running a 290X for video via a DP cable to a Philips 29" Ultrawide monitor set for 2560x1080. If I try to open the BIOS as the system boots I get a black screen and eventually the monitor goes off. If I do it through the UEFI restart app from ASRock I can get into the BIOS fine. Any thoughts?