A:Please install OS both in GPT or MBR mode.

Both in GPT mode, please refer below steps:
1. Boot into BIOS→[Boot]→[PCI ROM Priority]→choose [EFI Compatible ROM], then press "F10" to save changes and exit.
2. Then press "F11" when booting up and choose "UEFI:[your ODD name]" to install OS.

Both in MBR mode, please refer below step:
Please press "F11" when booting up and choose "AHCI/SATA:[your ODD name]" to install OS.