Inside your laptops BIOS there a part where you can enable/disable CD-ROM boot. Check it first if it's enabled. Go back to boot Priority and by default DVD/CD drive is the default 1st boot device.
Inside your laptops BIOS there a part where you can enable/disable CD-ROM boot. Check it first if it's enabled. Go back to boot Priority and by default DVD/CD drive is the default 1st boot device.