I don't see a f4 bios at the maker's site.
Where did this bios come from?
After I updated BIOS due to audio-related reasons, before Windows logo shows, an underscore blinks for 5-6 seconds, which doubles my startup time. Other than that, Windows starts perfectly fine. Why do you think that this is happening? Checked boot order, SSD is the first option.
Gigabyte H270-HD3, F4 update