How to fix insert a bootable disk and press any key?

AoBox

Reputable
May 22, 2014
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So my custom built PC keeps no telling me to insert a bootable media then press any key, however when I enter the Bio and then exit it without doing anything it allows me to boot to windows, how can I fix it and make it boot without me entering the bios each time..?

its an SSD and its MBR

when I go to the boot menu by pressing F11 the first device is my optical drive even though in the bio its the first boot option is my SSD

My motherboard is Asrock z87 extreme6
OS: Windows 7 * 64 Bit*