Can't access bios (even though I can access windows repair)

I have two HDD in my MSI laptop. In one of them Windows 10 (with its own efi partition) is installed. In the other one I tried installing Fedora (again, with its own efi partition in said hdd).

After installing Fedora, I cannot access Windows 10. But not only that, I cannot access the BIOS (DEL key in my system, and it worked before so I know I'm hitting the right key).

If I try tuing on the laptop I just see the MSI logo and then a blank screen with an underscore on it.

If I press F3 I am able to enter the Windows recovering system. This means the keyboard is working.

None of the reset/restore options works: - Reset your PC: Unable to reset your PC. A required drive partition is missing. - Refresh: There was a problem refreshing your PC. No changes were made - Startup repair: Startup repair couldn't repair your PC. - Opening a terminal in windows and using bootrec: doesn´t find windows installation.

However, if I (from the Windows Startup Menu) choose "Use a device" I can choose the second HDD and get the grub menu and I am able to boot Fedora. I've checked the Windows HDD and everything looks ok.

I am very confused. The fact that I cannot access the bios at all worries me and I don´t know what else I can do.

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