Bu sorun çoğunlukla msi anakartlarda yaşandı ve son bios güncellemeleriyle büyük oranda çözüldü ama senin durum farklı sanırım, bazısında msi'a sorduklarında bu sürenin normal olduğunu söylemişler. Nasıl halledilir bilmiyorum.
Ayrıca aşağı da ki yorumu gördüm, düzelmiş birisinde. Resimleri vpn ile aç ve dene bakalım anlattıklarını.
@Unboxing Ground There is an option, follow what I will send you, a few pictures and you will make it.
First Select CSM As shown here: Then Select your Drive where Windows is, here mine is the Kingston SA400, etc. And then drag it to be fist in the line as here Then go Settings, then Boot and you will see this section  then click Hard Disk Drive BBS Priorities
And then in BBS Priorities Select your Drive that it has Windows On it to be As first boot priority  as I have set it to mine here then F10 = Save and Exit after that doesn't matter anymore, your selected drive will always be first boot priority unless you change it, if you change it like to a USB thumb drive do what you will do and go back select it again your primary drive as Boot number one. I hope this helps you.