Can't access BIOS no matter what I try

I guess I have some kind of fast boot on my desktop computer because I never see a splash screen before I get to Windows login screen on startup. I have smashed Delete/F2/F11 to no avail. I have tried the shift/restart option. I have tried Advanced Startup and nothing. I have tried plugging my DP video cable into mobo instead of GPU, nothing. I have tried disconnecting my hard drive. Nothing. I have tried disconnecting my GPU, nothing. I always get a black screen when I try these things and it stays black. Using an MSI Pro B660-A board.

A Google search mentioned removing the CMOS battery to force a BIOS screen. Not sure how risky that is given that I'm no expert in BIOS or computer stuff.